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<p class='location'>Enum Async</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#variants">Variants</a><div class="sidebar-links"><a href="#variant.Ready">Ready</a><a href="#variant.NotReady">NotReady</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.map">map</a><a href="#method.is_ready">is_ready</a><a href="#method.is_not_ready">is_not_ready</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Copy">Copy</a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-PartialEq%3CAsync%3CT%3E%3E">PartialEq<Async<T>></a></div></div><p class='location'><a href='../index.html'>tokio</a>::<wbr><a href='index.html'>prelude</a></p><script>window.sidebarCurrent = {name: 'Async', ty: 'enum', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Enum <a href='../index.html'>tokio</a>::<wbr><a href='index.html'>prelude</a>::<wbr><a class="enum" href=''>Async</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/poll.rs.html#24-30' title='goto source code'>[src]</a></span></h1>
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<pre class='rust enum'>pub enum Async<T> {
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Ready(T),
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NotReady,
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}</pre><div class='docblock'><p>Return type of future, indicating whether a value is ready or not.</p>
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</div><h2 id='variants' class='variants small-section-header'>
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Variants<a href='#variants' class='anchor'></a></h2>
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<span id="variant.Ready" class="variant small-section-header"><a href="#variant.Ready" class="anchor field"></a><span id='Ready.v' class='invisible'><code>Ready(T)</code></span></span><div class='docblock'><p>Represents that a value is immediately ready.</p>
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</div><span id="variant.NotReady" class="variant small-section-header"><a href="#variant.NotReady" class="anchor field"></a><span id='NotReady.v' class='invisible'><code>NotReady</code></span></span><div class='docblock'><p>Represents that a value is not ready yet, but may be so later.</p>
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Methods<a href='#methods' class='anchor'></a>
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<h3 id='impl' class='impl'><span class='in-band'><code>impl<T> <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#32-55' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.map' class="method"><span id='map.v' class='invisible'><code>pub fn <a href='#method.map' class='fnname'>map</a><F, U>(self, f: F) -> <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><U> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(T) -> U, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#34-41' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Change the success value of this <code>Async</code> with the closure provided</p>
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</div><h4 id='method.is_ready' class="method"><span id='is_ready.v' class='invisible'><code>pub fn <a href='#method.is_ready' class='fnname'>is_ready</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#44-49' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns whether this is <code>Async::Ready</code></p>
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</div><h4 id='method.is_not_ready' class="method"><span id='is_not_ready.v' class='invisible'><code>pub fn <a href='#method.is_not_ready' class='fnname'>is_not_ready</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#52-54' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns whether this is <code>Async::NotReady</code></p>
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</div></div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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</h2>
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<h3 id='impl-Copy' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a>, </span></code><a href='#impl-Copy' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'></div><h3 id='impl-From%3CT%3E' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T></code><a href='#impl-From%3CT%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#57-61' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.from' class="method"><span id='from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -> <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#58-60' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Performs the conversion.</p>
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</div></div><h3 id='impl-Clone' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, </span></code><a href='#impl-Clone' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
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</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#112-114' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
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</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>, </span></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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</div></div><h3 id='impl-PartialEq%3CAsync%3CT%3E%3E' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T>> for <a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a><T>, </span></code><a href='#impl-PartialEq%3CAsync%3CT%3E%3E' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.eq' class="method"><span id='eq.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&self, __arg_0: &<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
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</div><h4 id='method.ne' class="method"><span id='ne.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&self, __arg_0: &<a class="enum" href="../../tokio/prelude/enum.Async.html" title="enum tokio::prelude::Async">Async</a><T>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/futures/poll.rs.html#23' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>This method tests for <code>!=</code>.</p>
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