194 lines
8.8 KiB
HTML
194 lines
8.8 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `offset` mod in crate `chrono`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, offset">
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<title>chrono::offset - Rust</title>
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<link rel="stylesheet" type="text/css" href="../../normalize.css">
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<link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle">
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<script src="../../storage.js"></script>
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</head>
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<body class="rustdoc mod">
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<!--[if lte IE 8]>
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<div class="warning">
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This old browser is unsupported and will most likely display funky
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things.
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</div>
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<![endif]-->
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<nav class="sidebar">
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<div class="sidebar-menu">☰</div>
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<p class='location'>Module offset</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#traits">Traits</a></li></ul></div><p class='location'><a href='../index.html'>chrono</a></p><script>window.sidebarCurrent = {name: 'offset', ty: 'mod', relpath: '../'};</script><script defer src="../sidebar-items.js"></script></div>
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</nav>
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<script src="../../theme.js"></script>
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<nav class="sub">
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<form class="search-form js-only">
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<div class="search-container">
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<input class="search-input" name="search"
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autocomplete="off"
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placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
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type="search">
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</div>
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</form>
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</nav>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Module <a href='../index.html'>chrono</a>::<wbr><a class="mod" href=''>offset</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/chrono/offset/mod.rs.html#4-419' title='goto source code'>[src]</a></span></h1>
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<div class='docblock'><p>The time zone, which calculates offsets from the local time to UTC.</p>
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<p>There are four operations provided by the <code>TimeZone</code> trait:</p>
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<ol>
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<li>Converting the local <code>NaiveDateTime</code> to <code>DateTime<Tz></code></li>
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<li>Converting the UTC <code>NaiveDateTime</code> to <code>DateTime<Tz></code></li>
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<li>Converting <code>DateTime<Tz></code> to the local <code>NaiveDateTime</code></li>
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<li>Constructing <code>DateTime<Tz></code> objects from various offsets</li>
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</ol>
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<p>1 is used for constructors. 2 is used for the <code>with_timezone</code> method of date and time types.
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3 is used for other methods, e.g. <code>year()</code> or <code>format()</code>, and provided by an associated type
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which implements <code>Offset</code> (which then passed to <code>TimeZone</code> for actual implementations).
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Technically speaking <code>TimeZone</code> has a total knowledge about given timescale,
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but <code>Offset</code> is used as a cache to avoid the repeated conversion
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and provides implementations for 1 and 3.
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An <code>TimeZone</code> instance can be reconstructed from the corresponding <code>Offset</code> instance.</p>
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</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.FixedOffset.html"
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title='struct chrono::offset::FixedOffset'>FixedOffset</a></td>
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<td class='docblock-short'>
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<p>The time zone with fixed offset, from UTC-23:59:59 to UTC+23:59:59.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.Local.html"
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title='struct chrono::offset::Local'>Local</a></td>
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<td class='docblock-short'>
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<p>The local timescale. This is implemented via the standard <code>time</code> crate.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.Utc.html"
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title='struct chrono::offset::Utc'>Utc</a></td>
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<td class='docblock-short'>
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<p>The UTC time zone. This is the most efficient time zone when you don't need the local time.
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It is also used as an offset (which is also a dummy type).</p>
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</td>
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</tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="enum" href="enum.LocalResult.html"
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title='enum chrono::offset::LocalResult'>LocalResult</a></td>
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<td class='docblock-short'>
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<p>The conversion result from the local time to the timezone-aware datetime types.</p>
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</td>
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</tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="trait" href="trait.Offset.html"
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title='trait chrono::offset::Offset'>Offset</a></td>
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<td class='docblock-short'>
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<p>The offset from the local time to UTC.</p>
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</td>
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</tr>
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<tr class=' module-item'>
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<td><a class="trait" href="trait.TimeZone.html"
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title='trait chrono::offset::TimeZone'>TimeZone</a></td>
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<td class='docblock-short'>
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<p>The time zone.</p>
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</td>
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</tr></table></section>
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<h1 class="hidden">Help</h1>
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<h2>Keyboard Shortcuts</h2>
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<dl>
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<h2>Search Tricks</h2>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>struct</code>, <code>enum</code>,
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<code>trait</code>, <code>type</code>, <code>macro</code>,
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and <code>const</code>.
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Search functions by type signature (e.g.
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