149 lines
7 KiB
HTML
149 lines
7 KiB
HTML
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<meta name="keywords" content="rust, rustlang, rust-lang, channel">
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<title>futures::sync::oneshot::channel - Rust</title>
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<p class='location'><a href='../../index.html'>futures</a>::<wbr><a href='../index.html'>sync</a>::<wbr><a href='index.html'>oneshot</a></p><script>window.sidebarCurrent = {name: 'channel', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Function <a href='../../index.html'>futures</a>::<wbr><a href='../index.html'>sync</a>::<wbr><a href='index.html'>oneshot</a>::<wbr><a class="fn" href=''>channel</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../../src/futures/sync/oneshot.rs.html#97-106' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn channel<T>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="struct" href="../../../futures/sync/oneshot/struct.Sender.html" title="struct futures::sync::oneshot::Sender">Sender</a><T>, <a class="struct" href="../../../futures/sync/oneshot/struct.Receiver.html" title="struct futures::sync::oneshot::Receiver">Receiver</a><T><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></pre><div class='docblock'><p>Creates a new futures-aware, one-shot channel.</p>
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<p>This function is similar to Rust's channels found in the standard library.
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Two halves are returned, the first of which is a <code>Sender</code> handle, used to
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signal the end of a computation and provide its value. The second half is a
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<code>Receiver</code> which implements the <code>Future</code> trait, resolving to the value that
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was given to the <code>Sender</code> handle.</p>
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<p>Each half can be separately owned and sent across threads/tasks.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">thread</span>;
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<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">sync</span>::<span class="ident">oneshot</span>;
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<span class="kw">use</span> <span class="ident">futures</span>::<span class="kw-2">*</span>;
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<span class="kw">let</span> (<span class="ident">p</span>, <span class="ident">c</span>) <span class="op">=</span> <span class="ident">oneshot</span>::<span class="ident">channel</span>::<span class="op"><</span><span class="ident">i32</span><span class="op">></span>();
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<span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="op">||</span> {
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<span class="ident">c</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">i</span><span class="op">|</span> {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"got: {}"</span>, <span class="ident">i</span>);
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}).<span class="ident">wait</span>();
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});
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<span class="ident">p</span>.<span class="ident">send</span>(<span class="number">3</span>).<span class="ident">unwrap</span>();</pre>
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