greg/mentat
1
0
Fork 0
Code Issues 294 Pull requests Projects Releases 9 Packages Wiki Activity
mentat/chrono/naive/struct.NaiveDateTime.html

1076 lines
196 KiB
HTML
Raw Normal View History

Update documentation
2018-08-22 17:04:13 +00:00
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="rustdoc">
<meta name="description" content="API documentation for the Rust `NaiveDateTime` struct in crate `chrono`.">
<meta name="keywords" content="rust, rustlang, rust-lang, NaiveDateTime">
<title>chrono::naive::NaiveDateTime - Rust</title>
<link rel="stylesheet" type="text/css" href="../../normalize.css">
<link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle">
<link rel="stylesheet" type="text/css" href="../../dark.css">
<link rel="stylesheet" type="text/css" href="../../main.css" id="themeStyle">
<script src="../../storage.js"></script>
</head>
<body class="rustdoc struct">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<nav class="sidebar">
<div class="sidebar-menu">&#9776;</div>
<p class='location'>Struct NaiveDateTime</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.new">new</a><a href="#method.from_timestamp">from_timestamp</a><a href="#method.from_timestamp_opt">from_timestamp_opt</a><a href="#method.parse_from_str">parse_from_str</a><a href="#method.date">date</a><a href="#method.time">time</a><a href="#method.timestamp">timestamp</a><a href="#method.timestamp_millis">timestamp_millis</a><a href="#method.timestamp_nanos">timestamp_nanos</a><a href="#method.timestamp_subsec_millis">timestamp_subsec_millis</a><a href="#method.timestamp_subsec_micros">timestamp_subsec_micros</a><a href="#method.timestamp_subsec_nanos">timestamp_subsec_nanos</a><a href="#method.checked_add_signed">checked_add_signed</a><a href="#method.checked_sub_signed">checked_sub_signed</a><a href="#method.signed_duration_since">signed_duration_since</a><a href="#method.format_with_items">format_with_items</a><a href="#method.format">format</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Add%3CFixedOffset%3E">Add&lt;FixedOffset&gt;</a><a href="#impl-Sub%3CFixedOffset%3E">Sub&lt;FixedOffset&gt;</a><a href="#impl-Serialize">Serialize</a><a href="#impl-Deserialize%3C%27de%3E">Deserialize&lt;&#39;de&gt;</a><a href="#impl-PartialEq">PartialEq</a><a href="#impl-Eq">Eq</a><a href="#impl-PartialOrd">PartialOrd</a><a href="#impl-Ord">Ord</a><a href="#impl-Copy">Copy</a><a href="#impl-Clone">Clone</a><a href="#impl-Datelike">Datelike</a><a href="#impl-Timelike">Timelike</a><a href="#impl-Hash">Hash</a><a href="#impl-Add%3COldDuration%3E">Add&lt;OldDuration&gt;</a><a href="#impl-AddAssign%3COldDuration%3E">AddAssign&lt;OldDuration&gt;</a><a href="#impl-Sub%3COldDuration%3E">Sub&lt;OldDuration&gt;</a><a href="#impl-SubAssign%3COldDuration%3E">SubAssign&lt;OldDuration&gt;</a><a href="#impl-Sub%3CNaiveDateTime%3E">Sub&lt;NaiveDateTime&gt;</a><a href="#impl-Debug">Debug</a><a href="#impl-Display">Display</a><a href="#impl-FromStr">FromStr</a></div></div><p class='location'><a href='../index.html'>chrono</a>::<wbr><a href='index.html'>naive</a></p><script>window.sidebarCurrent = {name: 'NaiveDateTime', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
</nav>
<div class="theme-picker">
<button id="theme-picker" aria-label="Pick another theme!">
<img src="../../brush.svg" width="18" alt="Pick another theme!">
</button>
<div id="theme-choices"></div>
</div>
<script src="../../theme.js"></script>
<nav class="sub">
<form class="search-form js-only">
<div class="search-container">
<input class="search-input" name="search"
autocomplete="off"
placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
type="search">
</div>
</form>
</nav>
<section id='main' class="content">
<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>chrono</a>::<wbr><a href='index.html'>naive</a>::<wbr><a class="struct" href=''>NaiveDateTime</a></span><span class='out-of-band'><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>&#x2212;</span>]
</a>
</span><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#51-54' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct NaiveDateTime { /* fields omitted */ }</pre><div class='docblock'><p>ISO 8601 combined date and time without timezone.</p>
<h1 id="example" class="section-header"><a href="#example">Example</a></h1>
<p><code>NaiveDateTime</code> is commonly created from <a href="./struct.NaiveDate.html"><code>NaiveDate</code></a>.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>);</pre>
<p>You can use typical <a href="../trait.Datelike.html">date-like</a> and
<a href="../trait.Timelike.html">time-like</a> methods,
provided that relevant traits are in the scope.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">Datelike</span>, <span class="ident">Timelike</span>, <span class="ident">Weekday</span>};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Fri</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">num_seconds_from_midnight</span>(), <span class="number">33011</span>);</pre>
</div>
<h2 id='methods' class='small-section-header'>
Methods<a href='#methods' class='anchor'></a>
</h2>
<h3 id='impl' class='impl'><span class='in-band'><code>impl <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#56-678' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><code>pub fn <a href='#method.new' class='fnname'>new</a>(date: <a class="struct" href="../../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a>, time: <a class="struct" href="../../chrono/naive/struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#74-76' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> from date and time components.
Equivalent to <a href="./struct.NaiveDate.html#method.and_time"><code>date.and_time(time)</code></a>
and many other helper constructors on <code>NaiveDate</code>.</p>
<h1 id="example-1" class="section-header"><a href="#example-1">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveTime</span>, <span class="ident">NaiveDateTime</span>};
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">3</span>);
<span class="kw">let</span> <span class="ident">t</span> <span class="op">=</span> <span class="ident">NaiveTime</span>::<span class="ident">from_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">new</span>(<span class="ident">d</span>, <span class="ident">t</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">date</span>(), <span class="ident">d</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">time</span>(), <span class="ident">t</span>);</pre>
</div><h4 id='method.from_timestamp' class="method"><span id='from_timestamp.v' class='invisible'><code>pub fn <a href='#method.from_timestamp' class='fnname'>from_timestamp</a>(secs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>, nsecs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#104-107' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> corresponding to a UTC date and time,
from the number of non-leap seconds
since the midnight UTC on January 1, 1970 (aka &quot;UNIX timestamp&quot;)
and the number of nanoseconds since the last whole non-leap second.</p>
<p>For a non-naive version of this function see
<a href="../offset/trait.TimeZone.html#method.timestamp"><code>TimeZone::timestamp</code></a>.</p>
<p>The nanosecond part can exceed 1,000,000,000 in order to represent the
<a href="./struct.NaiveTime.html#leap-second-handling">leap second</a>. (The true &quot;UNIX
timestamp&quot; cannot represent a leap second unambiguously.)</p>
<p>Panics on the out-of-range number of seconds and/or invalid nanosecond.</p>
<h1 id="example-2" class="section-header"><a href="#example-2">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp</span>(<span class="number">0</span>, <span class="number">42_000_000</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>, <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">42</span>));
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp</span>(<span class="number">1_000_000_000</span>, <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>, <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>));</pre>
</div><h4 id='method.from_timestamp_opt' class="method"><span id='from_timestamp_opt.v' class='invisible'><code>pub fn <a href='#method.from_timestamp_opt' class='fnname'>from_timestamp_opt</a>(secs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>, nsecs: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#135-144' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> corresponding to a UTC date and time,
from the number of non-leap seconds
since the midnight UTC on January 1, 1970 (aka &quot;UNIX timestamp&quot;)
and the number of nanoseconds since the last whole non-leap second.</p>
<p>The nanosecond part can exceed 1,000,000,000
in order to represent the <a href="./struct.NaiveTime.html#leap-second-handling">leap second</a>.
(The true &quot;UNIX timestamp&quot; cannot represent a leap second unambiguously.)</p>
<p>Returns <code>None</code> on the out-of-range number of seconds and/or invalid nanosecond.</p>
<h1 id="example-3" class="section-header"><a href="#example-3">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">i64</span>;
<span class="kw">let</span> <span class="ident">from_timestamp_opt</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">from_timestamp_opt</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">0</span>).<span class="ident">is_some</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">999_999_999</span>).<span class="ident">is_some</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">1_500_000_000</span>).<span class="ident">is_some</span>()); <span class="comment">// leap second</span>
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="number">0</span>, <span class="number">2_000_000_000</span>).<span class="ident">is_none</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">from_timestamp_opt</span>(<span class="ident">i64</span>::<span class="ident">MAX</span>, <span class="number">0</span>).<span class="ident">is_none</span>());</pre>
</div><h4 id='method.parse_from_str' class="method"><span id='parse_from_str.v' class='invisible'><code>pub fn <a href='#method.parse_from_str' class='fnname'>parse_from_str</a>(s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, fmt: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="type" href="../../chrono/format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#207-211' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Parses a string with the specified format string and returns a new <code>NaiveDateTime</code>.
See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<h1 id="example-4" class="section-header"><a href="#example-4">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">let</span> <span class="ident">parse_from_str</span> <span class="op">=</span> <span class="ident">NaiveDateTime</span>::<span class="ident">parse_from_str</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2015-09-05 23:56:04&quot;</span>, <span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;5sep2015pm012345.6789&quot;</span>, <span class="string">&quot;%d%b%Y%p%I%M%S%.f&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms_micro</span>(<span class="number">13</span>, <span class="number">23</span>, <span class="number">45</span>, <span class="number">678_900</span>)));</pre>
<p>Offset is ignored for the purpose of parsing.</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2014-5-17T12:34:56+09:30&quot;</span>, <span class="string">&quot;%Y-%m-%dT%H:%M:%S%z&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">17</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre>
<p><a href="./struct.NaiveTime.html#leap-second-handling">Leap seconds</a> are correctly handled by
treating any time of the form <code>hh:mm:60</code> as a leap second.
(This equally applies to the formatting, so the round trip is possible.)</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2015-07-01 08:59:60.123&quot;</span>, <span class="string">&quot;%Y-%m-%d %H:%M:%S%.f&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_123</span>)));</pre>
<p>Missing seconds are assumed to be zero,
but out-of-bound times or insufficient fields are errors otherwise.</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 7:15&quot;</span>, <span class="string">&quot;%y/%m/%d %H:%M&quot;</span>),
<span class="prelude-val">Ok</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1994</span>, <span class="number">9</span>, <span class="number">4</span>).<span class="ident">and_hms</span>(<span class="number">7</span>, <span class="number">15</span>, <span class="number">0</span>)));
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;04m33s&quot;</span>, <span class="string">&quot;%Mm%Ss&quot;</span>).<span class="ident">is_err</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 12&quot;</span>, <span class="string">&quot;%y/%m/%d %H&quot;</span>).<span class="ident">is_err</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 17:60&quot;</span>, <span class="string">&quot;%y/%m/%d %H:%M&quot;</span>).<span class="ident">is_err</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;94/9/4 24:00:00&quot;</span>, <span class="string">&quot;%y/%m/%d %H:%M:%S&quot;</span>).<span class="ident">is_err</span>());</pre>
<p>All parsed fields should be consistent to each other, otherwise it's an error.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">fmt</span> <span class="op">=</span> <span class="string">&quot;%Y-%m-%d %H:%M:%S = UNIX timestamp %s&quot;</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;2001-09-09 01:46:39 = UNIX timestamp 999999999&quot;</span>, <span class="ident">fmt</span>).<span class="ident">is_ok</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">parse_from_str</span>(<span class="string">&quot;1970-01-01 00:00:00 = UNIX timestamp 1&quot;</span>, <span class="ident">fmt</span>).<span class="ident">is_err</span>());</pre>
</div><h4 id='method.date' class="method"><span id='date.v' class='invisible'><code>pub fn <a href='#method.date' class='fnname'>date</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDate.html" title="struct chrono::naive::NaiveDate">NaiveDate</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#224-226' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Retrieves a date component.</p>
<h1 id="example-5" class="section-header"><a href="#example-5">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">date</span>(), <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>));</pre>
</div><h4 id='method.time' class="method"><span id='time.v' class='invisible'><code>pub fn <a href='#method.time' class='fnname'>time</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveTime.html" title="struct chrono::naive::NaiveTime">NaiveTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#239-241' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Retrieves a time component.</p>
<h1 id="example-6" class="section-header"><a href="#example-6">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveTime</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">time</span>(), <span class="ident">NaiveTime</span>::<span class="ident">from_hms</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>));</pre>
</div><h4 id='method.timestamp' class="method"><span id='timestamp.v' class='invisible'><code>pub fn <a href='#method.timestamp' class='fnname'>timestamp</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#266-271' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of non-leap seconds since the midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true &quot;UNIX timestamp&quot; would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<h1 id="example-7" class="section-header"><a href="#example-7">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">980</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="number">1</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="number">1_000_000_000</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1969</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="op">-</span><span class="number">1</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp</span>(), <span class="op">-</span><span class="number">62198755200</span>);</pre>
</div><h4 id='method.timestamp_millis' class="method"><span id='timestamp_millis.v' class='invisible'><code>pub fn <a href='#method.timestamp_millis' class='fnname'>timestamp_millis</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#298-301' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of non-leap <em>milliseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true &quot;UNIX timestamp&quot; would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<p>Note also that this does reduce the number of years that can be
represented from ~584 Billion to ~584 Million. (If this is a problem,
please file an issue to let me know what domain needs millisecond
precision over billions of years, I'm curious.)</p>
<h1 id="example-8" class="section-header"><a href="#example-8">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">444</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_millis</span>(), <span class="number">1_444</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms_milli</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>, <span class="number">555</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_millis</span>(), <span class="number">1_000_000_000_555</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1969</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">100</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_millis</span>(), <span class="op">-</span><span class="number">900</span>);</pre>
</div><h4 id='method.timestamp_nanos' class="method"><span id='timestamp_nanos.v' class='invisible'><code>pub fn <a href='#method.timestamp_nanos' class='fnname'>timestamp_nanos</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#325-328' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of non-leap <em>nanoseconds</em> since midnight on January 1, 1970.</p>
<p>Note that this does <em>not</em> account for the timezone!
The true &quot;UNIX timestamp&quot; would count seconds since the midnight <em>UTC</em> on the epoch.</p>
<p>Note also that this does reduce the number of years that can be
represented from ~584 Billion to ~584. (If this is a problem,
please file an issue to let me know what domain needs nanosecond
precision over millenia, I'm curious.)</p>
<h1 id="example-9" class="section-header"><a href="#example-9">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">444</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_nanos</span>(), <span class="number">1_000_000_444</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2001</span>, <span class="number">9</span>, <span class="number">9</span>).<span class="ident">and_hms_nano</span>(<span class="number">1</span>, <span class="number">46</span>, <span class="number">40</span>, <span class="number">555</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_nanos</span>(), <span class="number">1_000_000_000_000_000_555</span>);</pre>
</div><h4 id='method.timestamp_subsec_millis' class="method"><span id='timestamp_subsec_millis.v' class='invisible'><code>pub fn <a href='#method.timestamp_subsec_millis' class='fnname'>timestamp_subsec_millis</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#347-349' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of milliseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999.</p>
<h1 id="example-10" class="section-header"><a href="#example-10">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">123_456_789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_millis</span>(), <span class="number">123</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_millis</span>(), <span class="number">1_234</span>);</pre>
</div><h4 id='method.timestamp_subsec_micros' class="method"><span id='timestamp_subsec_micros.v' class='invisible'><code>pub fn <a href='#method.timestamp_subsec_micros' class='fnname'>timestamp_subsec_micros</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#368-370' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of microseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999,999.</p>
<h1 id="example-11" class="section-header"><a href="#example-11">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">123_456_789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_micros</span>(), <span class="number">123_456</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_micros</span>(), <span class="number">1_234_567</span>);</pre>
</div><h4 id='method.timestamp_subsec_nanos' class="method"><span id='timestamp_subsec_nanos.v' class='invisible'><code>pub fn <a href='#method.timestamp_subsec_nanos' class='fnname'>timestamp_subsec_nanos</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#389-391' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of nanoseconds since the last whole non-leap second.</p>
<p>The return value ranges from 0 to 999,999,999,
or for <a href="./struct.NaiveTime.html#leap-second-handling">leap seconds</a>, to 1,999,999,999.</p>
<h1 id="example-12" class="section-header"><a href="#example-12">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">123_456_789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_nanos</span>(), <span class="number">123_456_789</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms_nano</span>(<span class="number">8</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_234_567_890</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">timestamp_subsec_nanos</span>(), <span class="number">1_234_567_890</span>);</pre>
</div><h4 id='method.checked_add_signed' class="method"><span id='checked_add_signed.v' class='invisible'><code>pub fn <a href='#method.checked_add_signed' class='fnname'>checked_add_signed</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#467-477' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Adds given <code>Duration</code> to the current date and time.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Returns <code>None</code> when it will result in overflow.</p>
<h1 id="example-13" class="section-header"><a href="#example-13">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">4</span>, <span class="number">6</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">980</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">450</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">430</span>)));</pre>
<p>Overflow returns <code>None</code>.</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1_000_000_000</span>)), <span class="prelude-val">None</span>);</pre>
<p>Leap seconds are handled,
but the addition assumes that it is the only leap second happened.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="op">-</span><span class="number">500</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">800</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">10</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">10</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_add_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>)));</pre>
</div><h4 id='method.checked_sub_signed' class="method"><span id='checked_sub_signed.v' class='invisible'><code>pub fn <a href='#method.checked_sub_signed' class='fnname'>checked_sub_signed</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#549-559' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Subtracts given <code>Duration</code> from the current date and time.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Returns <code>None</code> when it will result in overflow.</p>
<h1 id="example-14" class="section-header"><a href="#example-14">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">7</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>)));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">450</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">670</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">780</span>)));</pre>
<p>Overflow returns <code>None</code>.</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1_000_000_000</span>)), <span class="prelude-val">None</span>);</pre>
<p>Leap seconds are handled,
but the subtraction assumes that it is the only leap second happened.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">zero</span>()),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">200</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">60</span>)),
<span class="prelude-val">Some</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">checked_sub_signed</span>(<span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>)));</pre>
</div><h4 id='method.signed_duration_since' class="method"><span id='signed_duration_since.v' class='invisible'><code>pub fn <a href='#method.signed_duration_since' class='fnname'>signed_duration_since</a>(self, rhs: <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#605-607' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Subtracts another <code>NaiveDateTime</code> from the current date and time.
This does not overflow or underflow at all.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when any of the <code>NaiveDateTime</code>s themselves represents a leap second
in which case the assumption becomes that
<strong>there are exactly one (or two) leap second(s) ever</strong>.</p>
<h1 id="example-15" class="section-header"><a href="#example-15">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>).<span class="ident">signed_duration_since</span>(<span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>)),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span> <span class="op">+</span> <span class="number">1</span>));
<span class="comment">// July 8 is 190th day in the year 2016</span>
<span class="kw">let</span> <span class="ident">d0</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">500</span>).<span class="ident">signed_duration_since</span>(<span class="ident">d0</span>.<span class="ident">and_hms</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">189</span> <span class="op">*</span> <span class="number">86_400</span> <span class="op">+</span> <span class="number">7</span> <span class="op">*</span> <span class="number">60</span> <span class="op">+</span> <span class="number">6</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre>
<p>Leap seconds are handled, but the subtraction assumes that
there were no other leap seconds happened.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span>.<span class="ident">signed_duration_since</span>(<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">0</span>, <span class="number">0</span>)),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>).<span class="ident">signed_duration_since</span>(<span class="ident">leap</span>),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre>
</div><h4 id='method.format_with_items' class="method"><span id='format_with_items.v' class='invisible'><code>pub fn <a href='#method.format_with_items' class='fnname'>format_with_items</a>&lt;'a, I&gt;(&amp;self, items: I) -&gt; <a class="struct" href="../../chrono/format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a>&lt;I&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/iterator/trait.Iterator.html" title="trait core::iter::iterator::Iterator">Iterator</a>&lt;Item = <a class="enum" href="../../chrono/format/enum.Item.html" title="enum chrono::format::Item">Item</a>&lt;'a&gt;&gt; + <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,&nbsp;</span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#637-640' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Formats the combined date and time with the specified formatting items.
Otherwise it is same to the ordinary <a href="#method.format"><code>format</code></a> method.</p>
<p>The <code>Iterator</code> of items should be <code>Clone</code>able,
since the resulting <code>DelayedFormat</code> value may be formatted multiple times.</p>
<h1 id="example-16" class="section-header"><a href="#example-16">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">format</span>::<span class="ident">strftime</span>::<span class="ident">StrftimeItems</span>;
<span class="kw">let</span> <span class="ident">fmt</span> <span class="op">=</span> <span class="ident">StrftimeItems</span>::<span class="ident">new</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>);
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format_with_items</span>(<span class="ident">fmt</span>.<span class="ident">clone</span>()).<span class="ident">to_string</span>(), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>).<span class="ident">to_string</span>(), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);</pre>
<p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>.<span class="ident">format_with_items</span>(<span class="ident">fmt</span>)), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);</pre>
</div><h4 id='method.format' class="method"><span id='format.v' class='invisible'><code>pub fn <a href='#method.format' class='fnname'>format</a>&lt;'a&gt;(&amp;self, fmt: &amp;'a <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="struct" href="../../chrono/format/struct.DelayedFormat.html" title="struct chrono::format::DelayedFormat">DelayedFormat</a>&lt;<a class="struct" href="../../chrono/format/strftime/struct.StrftimeItems.html" title="struct chrono::format::strftime::StrftimeItems">StrftimeItems</a>&lt;'a&gt;&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#675-677' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Formats the combined date and time with the specified format string.
See the <a href="../format/strftime/index.html"><code>format::strftime</code> module</a>
on the supported escape sequences.</p>
<p>This returns a <code>DelayedFormat</code>,
which gets converted to a string only when actual formatting happens.
You may use the <code>to_string</code> method to get a <code>String</code>,
or just feed it into <code>print!</code> and other formatting macros.
(In this way it avoids the redundant memory allocation.)</p>
<p>A wrong format string does <em>not</em> issue an error immediately.
Rather, converting or formatting the <code>DelayedFormat</code> fails.
You are recommended to immediately use <code>DelayedFormat</code> for this reason.</p>
<h1 id="example-17" class="section-header"><a href="#example-17">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">5</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>).<span class="ident">to_string</span>(), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;around %l %p on %b %-d&quot;</span>).<span class="ident">to_string</span>(), <span class="string">&quot;around 11 PM on Sep 5&quot;</span>);</pre>
<p>The resulting <code>DelayedFormat</code> can be formatted directly via the <code>Display</code> trait.</p>
<pre class="rust rust-example-rendered">
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;%Y-%m-%d %H:%M:%S&quot;</span>)), <span class="string">&quot;2015-09-05 23:56:04&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>.<span class="ident">format</span>(<span class="string">&quot;around %l %p on %b %-d&quot;</span>)), <span class="string">&quot;around 11 PM on Sep 5&quot;</span>);</pre>
</div></div>
<h2 id='implementations' class='small-section-header'>
Trait Implementations<a href='#implementations' class='anchor'></a>
</h2>
<h3 id='impl-Add%3CFixedOffset%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a>&lt;<a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Add%3CFixedOffset%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#169-176' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='associatedtype.Output' class="type"><span id='Output.t' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span></h4>
<div class='docblock'><p>The resulting type after applying the <code>+</code> operator.</p>
</div><h4 id='method.add' class="method"><span id='add.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#tymethod.add' class='fnname'>add</a>(self, rhs: <a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#173-175' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>+</code> operation.</p>
</div></div><h3 id='impl-Sub%3CFixedOffset%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a>&lt;<a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sub%3CFixedOffset%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#178-185' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='associatedtype.Output-1' class="type"><span id='Output.t-1' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span></h4>
<div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
</div><h4 id='method.sub' class="method"><span id='sub.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: <a class="struct" href="../../chrono/offset/struct.FixedOffset.html" title="struct chrono::offset::FixedOffset">FixedOffset</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/offset/fixed.rs.html#182-184' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>-</code> operation.</p>
</div></div><h3 id='impl-Serialize' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../serde/ser/trait.Serialize.html" title="trait serde::ser::Serialize">Serialize</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Serialize' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1662-1678' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>Serialize a <code>NaiveDateTime</code> as an RFC 3339 string</p>
<p>See <a href="./serde/index.html">the <code>serde</code> module</a> for alternate
serialization formats.</p>
</div><div class='impl-items'><h4 id='method.serialize' class="method"><span id='serialize.v' class='invisible'><code>fn <a href='../../serde/ser/trait.Serialize.html#tymethod.serialize' class='fnname'>serialize</a>&lt;S&gt;(&amp;self, serializer: S) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;S::<a class="type" href="../../serde/ser/trait.Serializer.html#associatedtype.Ok" title="type serde::ser::Serializer::Ok">Ok</a>, S::<a class="type" href="../../serde/ser/trait.Serializer.html#associatedtype.Error" title="type serde::ser::Serializer::Error">Error</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;S: <a class="trait" href="../../serde/ser/trait.Serializer.html" title="trait serde::ser::Serializer">Serializer</a>,&nbsp;</span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1663-1677' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Serialize this value into the given Serde serializer. <a href="../../serde/ser/trait.Serialize.html#tymethod.serialize">Read more</a></p>
</div></div><h3 id='impl-Deserialize%3C%27de%3E' class='impl'><span class='in-band'><code>impl&lt;'de&gt; <a class="trait" href="../../serde/de/trait.Deserialize.html" title="trait serde::de::Deserialize">Deserialize</a>&lt;'de&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Deserialize%3C%27de%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1697-1703' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.deserialize' class="method"><span id='deserialize.v' class='invisible'><code>fn <a href='../../serde/de/trait.Deserialize.html#tymethod.deserialize' class='fnname'>deserialize</a>&lt;D&gt;(deserializer: D) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self, D::<a class="type" href="../../serde/de/trait.Deserializer.html#associatedtype.Error" title="type serde::de::Deserializer::Error">Error</a>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;D: <a class="trait" href="../../serde/de/trait.Deserializer.html" title="trait serde::de::Deserializer">Deserializer</a>&lt;'de&gt;,&nbsp;</span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1698-1702' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Deserialize this value from the given Serde deserializer. <a href="../../serde/de/trait.Deserialize.html#tymethod.deserialize">Read more</a></p>
</div></div><h3 id='impl-PartialEq' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-PartialEq' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.eq' class="method"><span id='eq.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
</div><h4 id='method.ne' class="method"><span id='ne.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method tests for <code>!=</code>.</p>
</div></div><h3 id='impl-Eq' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Eq' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'></div><h3 id='impl-PartialOrd' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-PartialOrd' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.partial_cmp' class="method"><span id='partial_cmp.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp' class='fnname'>partial_cmp</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method returns an ordering between <code>self</code> and <code>other</code> values if one exists. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#tymethod.partial_cmp">Read more</a></p>
</div><h4 id='method.lt' class="method"><span id='lt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.lt' class='fnname'>lt</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method tests less than (for <code>self</code> and <code>other</code>) and is used by the <code>&lt;</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.lt">Read more</a></p>
</div><h4 id='method.le' class="method"><span id='le.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.le' class='fnname'>le</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method tests less than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code>&lt;=</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.le">Read more</a></p>
</div><h4 id='method.gt' class="method"><span id='gt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.gt' class='fnname'>gt</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method tests greater than (for <code>self</code> and <code>other</code>) and is used by the <code>&gt;</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.gt">Read more</a></p>
</div><h4 id='method.ge' class="method"><span id='ge.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.ge' class='fnname'>ge</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method tests greater than or equal to (for <code>self</code> and <code>other</code>) and is used by the <code>&gt;=</code> operator. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html#method.ge">Read more</a></p>
</div></div><h3 id='impl-Ord' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Ord' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.cmp' class="method"><span id='cmp.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#tymethod.cmp' class='fnname'>cmp</a>(&amp;self, __arg_0: &amp;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>This method returns an <code>Ordering</code> between <code>self</code> and <code>other</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#tymethod.cmp">Read more</a></p>
</div><h4 id='method.max' class="method"><span id='max.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.max' class='fnname'>max</a>(self, other: Self) -&gt; Self</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/cmp.rs.html#460-463' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Compares and returns the maximum of two values. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.max">Read more</a></p>
</div><h4 id='method.min' class="method"><span id='min.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.min' class='fnname'>min</a>(self, other: Self) -&gt; Self</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.21.0'>1.21.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/cmp.rs.html#476-479' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Compares and returns the minimum of two values. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html#method.min">Read more</a></p>
</div></div><h3 id='impl-Copy' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Copy' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'></div><h3 id='impl-Clone' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Clone' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#50' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#112-114' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-Datelike' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../chrono/trait.Datelike.html" title="trait chrono::Datelike">Datelike</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Datelike' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#680-996' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.year' class="method"><span id='year.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.year' class='fnname'>year</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#694-696' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the year number in the <a href="./index.html#calendar-date">calendar date</a>.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.year"><code>NaiveDate::year</code></a> method.</p>
<h1 id="example-18" class="section-header"><a href="#example-18">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">year</span>(), <span class="number">2015</span>);</pre>
</div><h4 id='method.month' class="method"><span id='month.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.month' class='fnname'>month</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#713-715' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the month number starting from 1.</p>
<p>The return value ranges from 1 to 12.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month"><code>NaiveDate::month</code></a> method.</p>
<h1 id="example-19" class="section-header"><a href="#example-19">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">month</span>(), <span class="number">9</span>);</pre>
</div><h4 id='method.month0' class="method"><span id='month0.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.month0' class='fnname'>month0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#732-734' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the month number starting from 0.</p>
<p>The return value ranges from 0 to 11.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.month0"><code>NaiveDate::month0</code></a> method.</p>
<h1 id="example-20" class="section-header"><a href="#example-20">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">month0</span>(), <span class="number">8</span>);</pre>
</div><h4 id='method.day' class="method"><span id='day.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.day' class='fnname'>day</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#751-753' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the day of month starting from 1.</p>
<p>The return value ranges from 1 to 31. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day"><code>NaiveDate::day</code></a> method.</p>
<h1 id="example-21" class="section-header"><a href="#example-21">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">day</span>(), <span class="number">25</span>);</pre>
</div><h4 id='method.day0' class="method"><span id='day0.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.day0' class='fnname'>day0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#770-772' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the day of month starting from 0.</p>
<p>The return value ranges from 0 to 30. (The last day of month differs by months.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.day0"><code>NaiveDate::day0</code></a> method.</p>
<h1 id="example-22" class="section-header"><a href="#example-22">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">day0</span>(), <span class="number">24</span>);</pre>
</div><h4 id='method.ordinal' class="method"><span id='ordinal.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.ordinal' class='fnname'>ordinal</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#789-791' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the day of year starting from 1.</p>
<p>The return value ranges from 1 to 366. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal"><code>NaiveDate::ordinal</code></a> method.</p>
<h1 id="example-23" class="section-header"><a href="#example-23">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">ordinal</span>(), <span class="number">268</span>);</pre>
</div><h4 id='method.ordinal0' class="method"><span id='ordinal0.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.ordinal0' class='fnname'>ordinal0</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#808-810' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the day of year starting from 0.</p>
<p>The return value ranges from 0 to 365. (The last day of year differs by years.)</p>
<p>See also the <a href="./struct.NaiveDate.html#method.ordinal0"><code>NaiveDate::ordinal0</code></a> method.</p>
<h1 id="example-24" class="section-header"><a href="#example-24">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">ordinal0</span>(), <span class="number">267</span>);</pre>
</div><h4 id='method.weekday' class="method"><span id='weekday.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.weekday' class='fnname'>weekday</a>(&amp;self) -&gt; <a class="enum" href="../../chrono/enum.Weekday.html" title="enum chrono::Weekday">Weekday</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#825-827' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the day of week.</p>
<p>See also the <a href="./struct.NaiveDate.html#method.weekday"><code>NaiveDate::weekday</code></a> method.</p>
<h1 id="example-25" class="section-header"><a href="#example-25">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>, <span class="ident">Weekday</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">weekday</span>(), <span class="ident">Weekday</span>::<span class="ident">Fri</span>);</pre>
</div><h4 id='method.iso_week' class="method"><span id='iso_week.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.iso_week' class='fnname'>iso_week</a>(&amp;self) -&gt; <a class="struct" href="../../chrono/naive/struct.IsoWeek.html" title="struct chrono::naive::IsoWeek">IsoWeek</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#830-832' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the ISO week.</p>
</div><h4 id='method.with_year' class="method"><span id='with_year.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_year' class='fnname'>with_year</a>(&amp;self, year: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#851-853' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the year number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_year"><code>NaiveDate::with_year</code></a> method.</p>
<h1 id="example-26" class="section-header"><a href="#example-26">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_year</span>(<span class="number">2016</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_year</span>(<span class="op">-</span><span class="number">308</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="op">-</span><span class="number">308</span>, <span class="number">9</span>, <span class="number">25</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre>
</div><h4 id='method.with_month' class="method"><span id='with_month.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_month' class='fnname'>with_month</a>(&amp;self, month: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#873-875' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_month"><code>NaiveDate::with_month</code></a> method.</p>
<h1 id="example-27" class="section-header"><a href="#example-27">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">10</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">13</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month</span>(<span class="number">2</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre>
</div><h4 id='method.with_month0' class="method"><span id='with_month0.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_month0' class='fnname'>with_month0</a>(&amp;self, month0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#895-897' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the month number (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_month0"><code>NaiveDate::with_month0</code></a> method.</p>
<h1 id="example-28" class="section-header"><a href="#example-28">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">9</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">10</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">12</span>), <span class="prelude-val">None</span>); <span class="comment">// no month 13</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_month0</span>(<span class="number">1</span>), <span class="prelude-val">None</span>); <span class="comment">// no February 30</span></pre>
</div><h4 id='method.with_day' class="method"><span id='with_day.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_day' class='fnname'>with_day</a>(&amp;self, day: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#916-918' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_day"><code>NaiveDate::with_day</code></a> method.</p>
<h1 id="example-29" class="section-header"><a href="#example-29">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day</span>(<span class="number">30</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day</span>(<span class="number">31</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre>
</div><h4 id='method.with_day0' class="method"><span id='with_day0.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_day0' class='fnname'>with_day0</a>(&amp;self, day0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#937-939' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of month (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_day0"><code>NaiveDate::with_day0</code></a> method.</p>
<h1 id="example-30" class="section-header"><a href="#example-30">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day0</span>(<span class="number">29</span>), <span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_day0</span>(<span class="number">30</span>), <span class="prelude-val">None</span>); <span class="comment">// no September 31</span></pre>
</div><h4 id='method.with_ordinal' class="method"><span id='with_ordinal.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_ordinal' class='fnname'>with_ordinal</a>(&amp;self, ordinal: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#965-967' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 1) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_ordinal"><code>NaiveDate::with_ordinal</code></a> method.</p>
<h1 id="example-31" class="section-header"><a href="#example-31">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">366</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">60</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal</span>(<span class="number">366</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre>
</div><h4 id='method.with_ordinal0' class="method"><span id='with_ordinal0.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#tymethod.with_ordinal0' class='fnname'>with_ordinal0</a>(&amp;self, ordinal0: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#993-995' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the day of year (starting from 0) changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveDate.html#method.with_ordinal0"><code>NaiveDate::with_ordinal0</code></a> method.</p>
<h1 id="example-32" class="section-header"><a href="#example-32">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Datelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">3</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">365</span>), <span class="prelude-val">None</span>); <span class="comment">// 2015 had only 365 days</span>
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">59</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_ordinal0</span>(<span class="number">365</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">12</span>, <span class="number">31</span>).<span class="ident">and_hms</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>)));</pre>
</div><h4 id='method.year_ce' class="method"><span id='year_ce.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#method.year_ce' class='fnname'>year_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/lib.rs.html#807-814' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the absolute year number starting from 1 with a boolean flag, which is false when the year predates the epoch (BCE/BC) and true otherwise (CE/AD). <a href="../../chrono/trait.Datelike.html#method.year_ce">Read more</a></p>
</div><h4 id='method.num_days_from_ce' class="method"><span id='num_days_from_ce.v' class='invisible'><code>fn <a href='../../chrono/trait.Datelike.html#method.num_days_from_ce' class='fnname'>num_days_from_ce</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/lib.rs.html#897-909' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of days since January 1, Year 1 (aka Day 1) in the proleptic Gregorian calendar. <a href="../../chrono/trait.Datelike.html#method.num_days_from_ce">Read more</a></p>
</div></div><h3 id='impl-Timelike' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../chrono/trait.Timelike.html" title="trait chrono::Timelike">Timelike</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Timelike' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#998-1164' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.hour' class="method"><span id='hour.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.hour' class='fnname'>hour</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1012-1014' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the hour number from 0 to 23.</p>
<p>See also the <a href="./struct.NaiveTime.html#method.hour"><code>NaiveTime::hour</code></a> method.</p>
<h1 id="example-33" class="section-header"><a href="#example-33">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">hour</span>(), <span class="number">12</span>);</pre>
</div><h4 id='method.minute' class="method"><span id='minute.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.minute' class='fnname'>minute</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1029-1031' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the minute number from 0 to 59.</p>
<p>See also the <a href="./struct.NaiveTime.html#method.minute"><code>NaiveTime::minute</code></a> method.</p>
<h1 id="example-34" class="section-header"><a href="#example-34">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">minute</span>(), <span class="number">34</span>);</pre>
</div><h4 id='method.second' class="method"><span id='second.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.second' class='fnname'>second</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1046-1048' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the second number from 0 to 59.</p>
<p>See also the <a href="./struct.NaiveTime.html#method.second"><code>NaiveTime::second</code></a> method.</p>
<h1 id="example-35" class="section-header"><a href="#example-35">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">second</span>(), <span class="number">56</span>);</pre>
</div><h4 id='method.nanosecond' class="method"><span id='nanosecond.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.nanosecond' class='fnname'>nanosecond</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1066-1068' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of nanoseconds since the whole non-leap second.
The range from 1,000,000,000 to 1,999,999,999 represents
the <a href="./struct.NaiveTime.html#leap-second-handling">leap second</a>.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.nanosecond"><code>NaiveTime::nanosecond</code></a> method.</p>
<h1 id="example-36" class="section-header"><a href="#example-36">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">nanosecond</span>(), <span class="number">789_000_000</span>);</pre>
</div><h4 id='method.with_hour' class="method"><span id='with_hour.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_hour' class='fnname'>with_hour</a>(&amp;self, hour: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1088-1090' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the hour number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_hour"><code>NaiveTime::with_hour</code></a> method.</p>
<h1 id="example-37" class="section-header"><a href="#example-37">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_hour</span>(<span class="number">7</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">7</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_hour</span>(<span class="number">24</span>), <span class="prelude-val">None</span>);</pre>
</div><h4 id='method.with_minute' class="method"><span id='with_minute.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_minute' class='fnname'>with_minute</a>(&amp;self, min: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1110-1112' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the minute number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_minute"><code>NaiveTime::with_minute</code></a> method.</p>
<h1 id="example-38" class="section-header"><a href="#example-38">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_minute</span>(<span class="number">45</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">45</span>, <span class="number">56</span>, <span class="number">789</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_minute</span>(<span class="number">60</span>), <span class="prelude-val">None</span>);</pre>
</div><h4 id='method.with_second' class="method"><span id='with_second.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_second' class='fnname'>with_second</a>(&amp;self, sec: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1134-1136' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with the second number changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.
As with the <a href="#method.second"><code>second</code></a> method,
the input range is restricted to 0 through 59.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_second"><code>NaiveTime::with_second</code></a> method.</p>
<h1 id="example-39" class="section-header"><a href="#example-39">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_second</span>(<span class="number">17</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">17</span>, <span class="number">789</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_second</span>(<span class="number">60</span>), <span class="prelude-val">None</span>);</pre>
</div><h4 id='method.with_nanosecond' class="method"><span id='with_nanosecond.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#tymethod.with_nanosecond' class='fnname'>with_nanosecond</a>(&amp;self, nano: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1161-1163' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Makes a new <code>NaiveDateTime</code> with nanoseconds since the whole non-leap second changed.</p>
<p>Returns <code>None</code> when the resulting <code>NaiveDateTime</code> would be invalid.
As with the <a href="#method.nanosecond"><code>nanosecond</code></a> method,
the input range can exceed 1,000,000,000 for leap seconds.</p>
<p>See also the
<a href="./struct.NaiveTime.html#method.with_nanosecond"><code>NaiveTime::with_nanosecond</code></a>
method.</p>
<h1 id="example-40" class="section-header"><a href="#example-40">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDate</span>, <span class="ident">NaiveDateTime</span>, <span class="ident">Timelike</span>};
<span class="kw">let</span> <span class="ident">dt</span>: <span class="ident">NaiveDateTime</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_milli</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">789</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_nanosecond</span>(<span class="number">333_333_333</span>),
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">333_333_333</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_nanosecond</span>(<span class="number">1_333_333_333</span>), <span class="comment">// leap second</span>
<span class="prelude-val">Some</span>(<span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">8</span>).<span class="ident">and_hms_nano</span>(<span class="number">12</span>, <span class="number">34</span>, <span class="number">56</span>, <span class="number">1_333_333_333</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">dt</span>.<span class="ident">with_nanosecond</span>(<span class="number">2_000_000_000</span>), <span class="prelude-val">None</span>);</pre>
</div><h4 id='method.hour12' class="method"><span id='hour12.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#method.hour12' class='fnname'>hour12</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/lib.rs.html#920-927' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the hour number from 1 to 12 with a boolean flag, which is false for AM and true for PM. <a href="../../chrono/trait.Timelike.html#method.hour12">Read more</a></p>
</div><h4 id='method.num_seconds_from_midnight' class="method"><span id='num_seconds_from_midnight.v' class='invisible'><code>fn <a href='../../chrono/trait.Timelike.html#method.num_seconds_from_midnight' class='fnname'>num_seconds_from_midnight</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/lib.rs.html#966-968' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the number of non-leap seconds past the last midnight.</p>
</div></div><h3 id='impl-Hash' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Hash' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1171-1176' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p><code>NaiveDateTime</code> can be used as a key to the hash maps (in principle).</p>
<p>Practically this also takes account of fractional seconds, so it is not recommended.
(For the obvious reason this also distinguishes leap seconds from non-leap seconds.)</p>
</div><div class='impl-items'><h4 id='method.hash' class="method"><span id='hash.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash' class='fnname'>hash</a>&lt;H:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>&gt;(&amp;self, state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>H)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1172-1175' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Feeds this value into the given [<code>Hasher</code>]. <a href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#tymethod.hash">Read more</a></p>
</div><h4 id='method.hash_slice' class="method"><span id='hash_slice.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice' class='fnname'>hash_slice</a>&lt;H&gt;(data: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[Self]</a>, state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>H) <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;H: <a class="trait" href="https://doc.rust-lang.org/nightly/core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>,&nbsp;</span></code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/hash/mod.rs.html#202-208' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Feeds a slice of this type into the given [<code>Hasher</code>]. <a href="https://doc.rust-lang.org/nightly/core/hash/trait.Hash.html#method.hash_slice">Read more</a></p>
</div></div><h3 id='impl-Add%3COldDuration%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Add%3COldDuration%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1233-1240' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>An addition of <code>Duration</code> to <code>NaiveDateTime</code> yields another <code>NaiveDateTime</code>.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Panics on underflow or overflow.
Use <a href="#method.checked_add_signed"><code>NaiveDateTime::checked_add_signed</code></a> to detect that.</p>
<h1 id="example-41" class="section-header"><a href="#example-41">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>), <span class="ident">hms</span>(<span class="number">4</span>, <span class="number">6</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">365</span>),
<span class="ident">from_ymd</span>(<span class="number">2017</span>, <span class="number">7</span>, <span class="number">8</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">980</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">450</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>, <span class="number">430</span>));</pre>
<p>Leap seconds are handled,
but the addition assumes that it is the only leap second happened.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="op">-</span><span class="number">500</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_800</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">800</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">100</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">10</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">10</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">50</span>, <span class="number">300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">300</span>));</pre>
</div><div class='impl-items'><h4 id='associatedtype.Output-2' class="type"><span id='Output.t-2' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span></h4>
<div class='docblock'><p>The resulting type after applying the <code>+</code> operator.</p>
</div><h4 id='method.add-1' class="method"><span id='add.v-1' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html#tymethod.add' class='fnname'>add</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1237-1239' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>+</code> operation.</p>
</div></div><h3 id='impl-AddAssign%3COldDuration%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.AddAssign.html" title="trait core::ops::arith::AddAssign">AddAssign</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-AddAssign%3COldDuration%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1242-1247' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.add_assign' class="method"><span id='add_assign.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.AddAssign.html#tymethod.add_assign' class='fnname'>add_assign</a>(&amp;mut self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1244-1246' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>+=</code> operation.</p>
</div></div><h3 id='impl-Sub%3COldDuration%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sub%3COldDuration%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1303-1310' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>A subtraction of <code>Duration</code> from <code>NaiveDateTime</code> yields another <code>NaiveDateTime</code>.
It is same to the addition with a negated <code>Duration</code>.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the addition assumes that <strong>there is no leap second ever</strong>,
except when the <code>NaiveDateTime</code> itself represents a leap second
in which case the assumption becomes that <strong>there is exactly a single leap second ever</strong>.</p>
<p>Panics on underflow or overflow.
Use <a href="#method.checked_sub_signed"><code>NaiveDateTime::checked_sub_signed</code></a> to detect that.</p>
<h1 id="example-42" class="section-header"><a href="#example-42">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="kw">let</span> <span class="ident">hms</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="op">-</span><span class="number">1</span>), <span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">8</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span>), <span class="ident">hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">86_400</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">365</span>),
<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">9</span>).<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>));
<span class="kw">let</span> <span class="ident">hmsm</span> <span class="op">=</span> <span class="op">|</span><span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span><span class="op">|</span> <span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="ident">h</span>, <span class="ident">m</span>, <span class="ident">s</span>, <span class="ident">milli</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">450</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">670</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">780</span>));</pre>
<p>Leap seconds are handled,
but the subtraction assumes that it is the only leap second happened.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">zero</span>(), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">200</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">1_100</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">59</span>, <span class="number">800</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">60</span>), <span class="ident">hmsm</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">300</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">days</span>(<span class="number">1</span>),
<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">7</span>).<span class="ident">and_hms_milli</span>(<span class="number">3</span>, <span class="number">6</span>, <span class="number">0</span>, <span class="number">300</span>));</pre>
</div><div class='impl-items'><h4 id='associatedtype.Output-3' class="type"><span id='Output.t-3' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span></h4>
<div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
</div><h4 id='method.sub-1' class="method"><span id='sub.v-1' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>) -&gt; <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1307-1309' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>-</code> operation.</p>
</div></div><h3 id='impl-SubAssign%3COldDuration%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.SubAssign.html" title="trait core::ops::arith::SubAssign">SubAssign</a>&lt;<a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-SubAssign%3COldDuration%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1312-1317' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.sub_assign' class="method"><span id='sub_assign.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.SubAssign.html#tymethod.sub_assign' class='fnname'>sub_assign</a>(&amp;mut self, rhs: <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a>)</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1314-1316' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>-=</code> operation.</p>
</div></div><h3 id='impl-Sub%3CNaiveDateTime%3E' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html" title="trait core::ops::arith::Sub">Sub</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt; for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Sub%3CNaiveDateTime%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1365-1372' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>Subtracts another <code>NaiveDateTime</code> from the current date and time.
This does not overflow or underflow at all.</p>
<p>As a part of Chrono's <a href="./struct.NaiveTime.html#leap-second-handling">leap second handling</a>,
the subtraction assumes that <strong>there is no leap second ever</strong>,
except when any of the <code>NaiveDateTime</code>s themselves represents a leap second
in which case the assumption becomes that
<strong>there are exactly one (or two) leap second(s) ever</strong>.</p>
<p>The implementation is a wrapper around
<a href="#method.signed_duration_since"><code>NaiveDateTime::signed_duration_since</code></a>.</p>
<h1 id="example-43" class="section-header"><a href="#example-43">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">let</span> <span class="ident">from_ymd</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>;
<span class="kw">let</span> <span class="ident">d</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>) <span class="op">-</span> <span class="ident">d</span>.<span class="ident">and_hms</span>(<span class="number">2</span>, <span class="number">4</span>, <span class="number">6</span>), <span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span> <span class="op">+</span> <span class="number">60</span> <span class="op">+</span> <span class="number">1</span>));
<span class="comment">// July 8 is 190th day in the year 2016</span>
<span class="kw">let</span> <span class="ident">d0</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">1</span>, <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">d</span>.<span class="ident">and_hms_milli</span>(<span class="number">0</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">500</span>) <span class="op">-</span> <span class="ident">d0</span>.<span class="ident">and_hms</span>(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">189</span> <span class="op">*</span> <span class="number">86_400</span> <span class="op">+</span> <span class="number">7</span> <span class="op">*</span> <span class="number">60</span> <span class="op">+</span> <span class="number">6</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre>
<p>Leap seconds are handled, but the subtraction assumes that
there were no other leap seconds happened.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">leap</span> <span class="op">=</span> <span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">leap</span> <span class="op">-</span> <span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">0</span>, <span class="number">0</span>),
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">7</span>, <span class="number">1</span>).<span class="ident">and_hms</span>(<span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>) <span class="op">-</span> <span class="ident">leap</span>,
<span class="ident">Duration</span>::<span class="ident">seconds</span>(<span class="number">3600</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">milliseconds</span>(<span class="number">500</span>));</pre>
</div><div class='impl-items'><h4 id='associatedtype.Output-4' class="type"><span id='Output.t-4' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#associatedtype.Output' class="type">Output</a> = <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a></code></span></h4>
<div class='docblock'><p>The resulting type after applying the <code>-</code> operator.</p>
</div><h4 id='method.sub-2' class="method"><span id='sub.v-2' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/arith/trait.Sub.html#tymethod.sub' class='fnname'>sub</a>(self, rhs: <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>) -&gt; <a class="struct" href="../../chrono/struct.Duration.html" title="struct chrono::Duration">OldDuration</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1369-1371' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Performs the <code>-</code> operation.</p>
</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1401-1405' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>The <code>Debug</code> output of the naive date and time <code>dt</code> is same to
<a href="../format/strftime/index.html"><code>dt.format(&quot;%Y-%m-%dT%H:%M:%S%.f&quot;)</code></a>.</p>
<p>The string printed can be readily parsed via the <code>parse</code> method on <code>str</code>.</p>
<p>It should be noted that, for leap seconds not on the minute boundary,
it may print a representation not distinguishable from non-leap seconds.
This doesn't matter in practice, since such leap seconds never happened.
(By the time of the first leap second on 1972-06-30,
every time zone offset around the world has standardized to the 5-minute alignment.)</p>
<h1 id="example-44" class="section-header"><a href="#example-44">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">15</span>).<span class="ident">and_hms</span>(<span class="number">7</span>, <span class="number">39</span>, <span class="number">24</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2016-11-15T07:39:24&quot;</span>);</pre>
<p>Leap seconds may also be used.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2015-06-30T23:59:60.500&quot;</span>);</pre>
</div><div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1402-1404' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-Display' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-Display' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1432-1436' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>The <code>Debug</code> output of the naive date and time <code>dt</code> is same to
<a href="../format/strftime/index.html"><code>dt.format(&quot;%Y-%m-%d %H:%M:%S%.f&quot;)</code></a>.</p>
<p>It should be noted that, for leap seconds not on the minute boundary,
it may print a representation not distinguishable from non-leap seconds.
This doesn't matter in practice, since such leap seconds never happened.
(By the time of the first leap second on 1972-06-30,
every time zone offset around the world has standardized to the 5-minute alignment.)</p>
<h1 id="example-45" class="section-header"><a href="#example-45">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">NaiveDate</span>;
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">15</span>).<span class="ident">and_hms</span>(<span class="number">7</span>, <span class="number">39</span>, <span class="number">24</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2016-11-15 07:39:24&quot;</span>);</pre>
<p>Leap seconds may also be used.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">6</span>, <span class="number">30</span>).<span class="ident">and_hms_milli</span>(<span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">&quot;{}&quot;</span>, <span class="ident">dt</span>), <span class="string">&quot;2015-06-30 23:59:60.500&quot;</span>);</pre>
</div><div class='impl-items'><h4 id='method.fmt-1' class="method"><span id='fmt.v-1' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1433-1435' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-FromStr' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html" title="trait core::str::FromStr">FromStr</a> for <a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a></code><a href='#impl-FromStr' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1454-1477' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>Parsing a <code>str</code> into a <code>NaiveDateTime</code> uses the same format,
<a href="../format/strftime/index.html"><code>%Y-%m-%dT%H:%M:%S%.f</code></a>, as in <code>Debug</code>.</p>
<h1 id="example-46" class="section-header"><a href="#example-46">Example</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">chrono</span>::{<span class="ident">NaiveDateTime</span>, <span class="ident">NaiveDate</span>};
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">2015</span>, <span class="number">9</span>, <span class="number">18</span>).<span class="ident">and_hms</span>(<span class="number">23</span>, <span class="number">56</span>, <span class="number">4</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">&quot;2015-09-18T23:56:04&quot;</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">NaiveDateTime</span><span class="op">&gt;</span>(), <span class="prelude-val">Ok</span>(<span class="ident">dt</span>));
<span class="kw">let</span> <span class="ident">dt</span> <span class="op">=</span> <span class="ident">NaiveDate</span>::<span class="ident">from_ymd</span>(<span class="number">12345</span>, <span class="number">6</span>, <span class="number">7</span>).<span class="ident">and_hms_milli</span>(<span class="number">7</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_500</span>); <span class="comment">// leap second</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">&quot;+12345-6-7T7:59:60.5&quot;</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">NaiveDateTime</span><span class="op">&gt;</span>(), <span class="prelude-val">Ok</span>(<span class="ident">dt</span>));
<span class="macro">assert</span><span class="macro">!</span>(<span class="string">&quot;foo&quot;</span>.<span class="ident">parse</span>::<span class="op">&lt;</span><span class="ident">NaiveDateTime</span><span class="op">&gt;</span>().<span class="ident">is_err</span>());</pre>
</div><div class='impl-items'><h4 id='associatedtype.Err' class="type"><span id='Err.t' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#associatedtype.Err' class="type">Err</a> = <a class="struct" href="../../chrono/format/struct.ParseError.html" title="struct chrono::format::ParseError">ParseError</a></code></span></h4>
<div class='docblock'><p>The associated error which can be returned from parsing.</p>
</div><h4 id='method.from_str' class="method"><span id='from_str.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#tymethod.from_str' class='fnname'>from_str</a>(s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="type" href="../../chrono/format/type.ParseResult.html" title="type chrono::format::ParseResult">ParseResult</a>&lt;<a class="struct" href="../../chrono/naive/struct.NaiveDateTime.html" title="struct chrono::naive::NaiveDateTime">NaiveDateTime</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/chrono/naive/datetime.rs.html#1457-1476' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Parses a string <code>s</code> to return a value of this type. <a href="https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#tymethod.from_str">Read more</a></p>
</div></div></section>
<section id='search' class="content hidden"></section>
<section class="footer"></section>
<aside id="help" class="hidden">
<div>
<h1 class="hidden">Help</h1>
<div class="shortcuts">
<h2>Keyboard Shortcuts</h2>
<dl>
<dt><kbd>?</kbd></dt>
<dd>Show this help dialog</dd>
<dt><kbd>S</kbd></dt>
<dd>Focus the search field</dd>
<dt><kbd>↑</kbd></dt>
<dd>Move up in search results</dd>
<dt><kbd>↓</kbd></dt>
<dd>Move down in search results</dd>
<dt><kbd>↹</kbd></dt>
<dd>Switch tab</dd>
<dt><kbd>&#9166;</kbd></dt>
<dd>Go to active search result</dd>
<dt><kbd>+</kbd></dt>
<dd>Expand all sections</dd>
<dt><kbd>-</kbd></dt>
<dd>Collapse all sections</dd>
</dl>
</div>
<div class="infos">
<h2>Search Tricks</h2>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>type</code>, <code>macro</code>,
and <code>const</code>.
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code> or <code>* -> vec</code>)
</p>
</div>
</div>
</aside>
<script>
window.rootPath = "../../";
window.currentCrate = "chrono";
</script>
<script src="../../main.js"></script>
<script defer src="../../search-index.js"></script>
</body>
</html>
Reference in a new issue Copy permalink