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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `select_all` fn in crate `futures`."><meta name="keywords" content="rust, rustlang, rust-lang, select_all"><title>futures::prelude::future::select_all - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled ><script id="default-settings"></script><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../../favicon.svg">
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<a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Function <a href="../../index.html">futures</a>::<wbr><a href="../index.html">prelude</a>::<wbr><a href="index.html">future</a>::<wbr><a class="fn" href="">select_all</a></span><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span><a class="srclink" href="../../../src/futures_util/future/select_all.rs.html#34-36" title="goto source code">[src]</a></span></h1><pre class="rust fn">pub fn select_all<I>(iter: I) -> <a class="struct" href="../../../futures/future/struct.SelectAll.html" title="struct futures::future::SelectAll">SelectAll</a><<I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<div class="notable-traits-tooltiptext"><span class="docblock"><h3 class="notable">Notable traits for <a class="struct" href="../../../futures/future/struct.SelectAll.html" title="struct futures::future::SelectAll">SelectAll</a><Fut></h3><code class="content"><span class="where fmt-newline">impl<Fut> <a class="trait" href="../../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a> for <a class="struct" href="../../../futures/future/struct.SelectAll.html" title="struct futures::future::SelectAll">SelectAll</a><Fut> <span class="where fmt-newline">where<br> Fut: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> + <a class="trait" href="../../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>, </span></span><span class="where fmt-newline"> type <a href="../../../futures/future/trait.Future.html#associatedtype.Output" class="type">Output</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><Fut as <a class="trait" href="../../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>>::<a class="type" href="../../../futures/future/trait.Future.html#associatedtype.Output" title="type futures::future::Future::Output">Output</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><Fut, <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/alloc/struct.Global.html" title="struct alloc::alloc::Global">Global</a>><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>;</span></code></span></div></span></span> <span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a>,<br> <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>: <a class="trait" href="../../../futures/future/trait.Future.html" title="trait futures::future::Future">Future</a>,<br> <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" title="type core::iter::traits::collect::IntoIterator::Item">Item</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>, </span></pre><div class="docblock"><p>Creates a new future which will select over a list of futures.</p>
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<p>The returned future will wait for any future within <code>iter</code> to be ready. Upon
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completion the item resolved will be returned, along with the index of the
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future that was ready and the list of all the remaining futures.</p>
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<p>There are no guarantees provided on the order of the list with the remaining
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futures. They might be swapped around, reversed, or completely random.</p>
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<p>This function is only available when the <code>std</code> or <code>alloc</code> feature of this
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library is activated, and it is activated by default.</p>
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<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
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<p>This function will panic if the iterator specified contains no items.</p>
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