138 lines
7.2 KiB
HTML
138 lines
7.2 KiB
HTML
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<!DOCTYPE html>
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<meta name="description" content="API documentation for the Rust `iter_ok` fn in crate `tokio`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, iter_ok">
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<title>tokio::prelude::stream::iter_ok - 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"
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<body class="rustdoc fn">
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This old browser is unsupported and will most likely display funky
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<div class="sidebar-menu">☰</div>
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<div class="sidebar-elems"><p class='location'><a href='../../index.html'>tokio</a>::<wbr><a href='../index.html'>prelude</a>::<wbr><a href='index.html'>stream</a></p><script>window.sidebarCurrent = {name: 'iter_ok', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Function <a href='../../index.html'>tokio</a>::<wbr><a href='../index.html'>prelude</a>::<wbr><a href='index.html'>stream</a>::<wbr><a class="fn" href=''>iter_ok</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../../../src/futures/stream/iter_ok.rs.html#30-37' title='goto source code'>[src]</a></span></h1><pre class='rust fn'>pub fn iter_ok<I, E>(i: I) -> <a class="struct" href="../../../tokio/prelude/stream/struct.IterOk.html" title="struct tokio::prelude::stream::IterOk">IterOk</a><<I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html" title="trait core::iter::traits::IntoIterator">IntoIterator</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html#associatedtype.IntoIter" title="type core::iter::traits::IntoIterator::IntoIter">IntoIter</a>, E> <span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html" title="trait core::iter::traits::IntoIterator">IntoIterator</a>, </span></pre><div class='docblock'><p>Converts an <code>Iterator</code> into a <code>Stream</code> which is always ready
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to yield the next value.</p>
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<p>Iterators in Rust don't express the ability to block, so this adapter
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simply always calls <code>iter.next()</code> and returns that.</p>
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<pre class="rust rust-example-rendered">
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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="kw-2">mut</span> <span class="ident">stream</span> <span class="op">=</span> <span class="ident">stream</span>::<span class="ident">iter_ok</span>::<span class="op"><</span><span class="kw">_</span>, ()<span class="op">></span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="number">17</span>, <span class="number">19</span>]);
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">Some</span>(<span class="number">17</span>))), <span class="ident">stream</span>.<span class="ident">poll</span>());
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">Some</span>(<span class="number">19</span>))), <span class="ident">stream</span>.<span class="ident">poll</span>());
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">None</span>)), <span class="ident">stream</span>.<span class="ident">poll</span>());</pre>
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