143 lines
7.7 KiB
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143 lines
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<p class='location'><a href='../../index.html'>chrono</a>::<wbr><a href='../index.html'>serde</a>::<wbr><a href='index.html'>ts_nanoseconds</a></p><script>window.sidebarCurrent = {name: 'serialize', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Function <a href='../../index.html'>chrono</a>::<wbr><a href='../index.html'>serde</a>::<wbr><a href='index.html'>ts_nanoseconds</a>::<wbr><a class="fn" href=''>serialize</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../../src/chrono/datetime.rs.html#931-935' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn serialize<S>(<br> dt: &<a class="struct" href="../../../chrono/struct.DateTime.html" title="struct chrono::DateTime">DateTime</a><<a class="struct" href="../../../chrono/offset/struct.Utc.html" title="struct chrono::offset::Utc">Utc</a>>, <br> serializer: S<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><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>> <span class="where fmt-newline">where<br> S: <a class="trait" href="../../../serde/ser/trait.Serializer.html" title="trait serde::ser::Serializer">Serializer</a>, </span></pre><div class='docblock'><p>Serialize a UTC datetime into an integer number of nanoseconds since the epoch</p>
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<p>Intended for use with <code>serde</code>s <code>serialize_with</code> attribute.</p>
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<h1 id="example" class="section-header"><a href="#example">Example:</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">chrono</span>::<span class="ident">serde</span>::<span class="ident">ts_nanoseconds</span>::<span class="ident">serialize</span> <span class="kw">as</span> <span class="ident">to_nano_ts</span>;
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<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Serialize</span>)]</span>
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<span class="kw">struct</span> <span class="ident">S</span> {
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<span class="attribute">#[<span class="ident">serde</span>(<span class="ident">serialize_with</span> <span class="op">=</span> <span class="string">"to_nano_ts"</span>)]</span>
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<span class="ident">time</span>: <span class="ident">DateTime</span><span class="op"><</span><span class="ident">Utc</span><span class="op">></span>
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}
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<span class="kw">let</span> <span class="ident">my_s</span> <span class="op">=</span> <span class="ident">S</span> {
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<span class="ident">time</span>: <span class="ident">Utc</span>.<span class="ident">ymd</span>(<span class="number">2018</span>, <span class="number">5</span>, <span class="number">17</span>).<span class="ident">and_hms_nano</span>(<span class="number">02</span>, <span class="number">04</span>, <span class="number">59</span>, <span class="number">918355733</span>),
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};
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<span class="kw">let</span> <span class="ident">as_string</span> <span class="op">=</span> <span class="ident">serde_json</span>::<span class="ident">to_string</span>(<span class="kw-2">&</span><span class="ident">my_s</span>)<span class="question-mark">?</span>;
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">as_string</span>, <span class="string">r#"{"time":1526522699918355733}"#</span>);</pre>
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