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<h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>futures</a>::<wbr><a href='index.html'>stream</a>::<wbr><a class="fn" href=''>iter</a></span><span class='out-of-band'><span id='render-detail'>
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               </span><a class='srclink' href='../../src/futures/stream/iter.rs.html#30-34' title='goto source code'>[src]</a></span></h1>
<pre class='rust fn'>pub fn iter&lt;J, T, E&gt;(i: J) -&gt; <a class="struct" href="../../futures/stream/struct.Iter.html" title="struct futures::stream::Iter">Iter</a>&lt;J::<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>&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;J: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/trait.IntoIterator.html" title="trait core::iter::traits::IntoIterator">IntoIterator</a>&lt;Item = <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt;&gt;,&nbsp;</span></pre><div class='stability'><div class='stab deprecated'>Deprecated<p>: implementation moved to <code>iter_ok</code> and <code>iter_result</code></p>
</div></div><div class='docblock'><p>Converts an <code>Iterator</code> over <code>Result</code>s into a <code>Stream</code> which is always ready
to yield the next value.</p>
<p>Iterators in Rust don't express the ability to block, so this adapter simply
always calls <code>iter.next()</code> and returns that.</p>

<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">futures</span>::<span class="kw-2">*</span>;

<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</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="prelude-val">Ok</span>(<span class="number">17</span>), <span class="prelude-val">Err</span>(<span class="bool-val">false</span>), <span class="prelude-val">Ok</span>(<span class="number">19</span>)]);
<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>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Err</span>(<span class="bool-val">false</span>), <span class="ident">stream</span>.<span class="ident">poll</span>());
<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>());
<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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