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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 `prelude` mod in crate `futures`."><meta name="keywords" content="rust, rustlang, rust-lang, prelude"><title>futures::prelude - 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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<link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc mod"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../futures/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a><p class="location">Module prelude</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#reexports">Re-exports</a></li><li><a href="#modules">Modules</a></li><li><a href="#traits">Traits</a></li></ul></div><p class="location"><a href="../index.html">futures</a></p><div id="sidebar-vars" data-name="prelude" data-ty="mod" data-relpath="../"></div><script defer src="../sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"></div><button type="button" class="help-button">?</button>
<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">Module <a href="../index.html">futures</a>::<wbr><a class="mod" href="">prelude</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">&#x2212;</span>]</a></span><a class="srclink" href="../../src/futures/lib.rs.html#159-192" title="goto source code">[src]</a></span></h1><div class="docblock"><p>A &quot;prelude&quot; for crates using the <code>futures</code> crate.</p>
<p>This prelude is similar to the standard library's prelude in that you'll
almost always want to import its entire contents, but unlike the
standard library's prelude you'll have to do so manually:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;</pre></div>
<p>The prelude may grow over time as additional items see ubiquitous use.</p>
</div><h2 id="reexports" class="section-header"><a href="#reexports">Re-exports</a></h2>
<table><tr><td><code>pub use crate::future::<a class="trait" href="../../futures/future/trait.FutureExt.html" title="trait futures::future::FutureExt">FutureExt</a> as _;</code></td></tr><tr><td><code>pub use crate::future::<a class="trait" href="../../futures/future/trait.TryFutureExt.html" title="trait futures::future::TryFutureExt">TryFutureExt</a> as _;</code></td></tr><tr><td><code>pub use crate::sink::<a class="trait" href="../../futures/sink/trait.SinkExt.html" title="trait futures::sink::SinkExt">SinkExt</a> as _;</code></td></tr><tr><td><code>pub use crate::stream::<a class="trait" href="../../futures/stream/trait.StreamExt.html" title="trait futures::stream::StreamExt">StreamExt</a> as _;</code></td></tr><tr><td><code>pub use crate::stream::<a class="trait" href="../../futures/stream/trait.TryStreamExt.html" title="trait futures::stream::TryStreamExt">TryStreamExt</a> as _;</code></td></tr><tr><td><code>pub use crate::io::<a class="trait" href="../../futures/io/trait.AsyncBufReadExt.html" title="trait futures::io::AsyncBufReadExt">AsyncBufReadExt</a> as _;</code></td></tr><tr><td><code>pub use crate::io::<a class="trait" href="../../futures/io/trait.AsyncReadExt.html" title="trait futures::io::AsyncReadExt">AsyncReadExt</a> as _;</code></td></tr><tr><td><code>pub use crate::io::<a class="trait" href="../../futures/io/trait.AsyncSeekExt.html" title="trait futures::io::AsyncSeekExt">AsyncSeekExt</a> as _;</code></td></tr><tr><td><code>pub use crate::io::<a class="trait" href="../../futures/io/trait.AsyncWriteExt.html" title="trait futures::io::AsyncWriteExt">AsyncWriteExt</a> as _;</code></td></tr></table><h2 id="modules" class="section-header"><a href="#modules">Modules</a></h2>
<table><tr class="module-item"><td><a class="mod" href="future/index.html" title="futures::prelude::future mod">future</a></td><td class="docblock-short"><p>Asynchronous values.</p>
</td></tr><tr class="module-item"><td><a class="mod" href="sink/index.html" title="futures::prelude::sink mod">sink</a></td><td class="docblock-short"><p>Asynchronous sinks.</p>
</td></tr><tr class="module-item"><td><a class="mod" href="stream/index.html" title="futures::prelude::stream mod">stream</a></td><td class="docblock-short"><p>Asynchronous streams.</p>
</td></tr></table><h2 id="traits" class="section-header"><a href="#traits">Traits</a></h2>
<table><tr class="module-item"><td><a class="trait" href="trait.AsyncBufRead.html" title="futures::prelude::AsyncBufRead trait">AsyncBufRead</a></td><td class="docblock-short"><p>Read bytes asynchronously.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.AsyncRead.html" title="futures::prelude::AsyncRead trait">AsyncRead</a></td><td class="docblock-short"><p>Read bytes asynchronously.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.AsyncSeek.html" title="futures::prelude::AsyncSeek trait">AsyncSeek</a></td><td class="docblock-short"><p>Seek bytes asynchronously.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.AsyncWrite.html" title="futures::prelude::AsyncWrite trait">AsyncWrite</a></td><td class="docblock-short"><p>Write bytes asynchronously.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.Future.html" title="futures::prelude::Future trait">Future</a></td><td class="docblock-short"><p>A future represents an asynchronous computation.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.Sink.html" title="futures::prelude::Sink trait">Sink</a></td><td class="docblock-short"><p>A <code>Sink</code> is a value into which other values can be sent, asynchronously.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.Stream.html" title="futures::prelude::Stream trait">Stream</a></td><td class="docblock-short"><p>A stream of values produced asynchronously.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.TryFuture.html" title="futures::prelude::TryFuture trait">TryFuture</a></td><td class="docblock-short"><p>A convenience for futures that return <code>Result</code> values that includes
a variety of adapters tailored to such futures.</p>
</td></tr><tr class="module-item"><td><a class="trait" href="trait.TryStream.html" title="futures::prelude::TryStream trait">TryStream</a></td><td class="docblock-short"><p>A convenience for streams that return <code>Result</code> values that includes
a variety of adapters tailored to such futures.</p>
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