rtic/2/api/futures_util/future/struct.OptionFuture.html
2024-12-06 13:35:18 +00:00

66 lines
No EOL
71 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!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="A future representing a value which may or may not be present."><title>OptionFuture in futures_util::future - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-b0742ba02757f159.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="futures_util" data-themes="" data-resource-suffix="" data-rustdoc-version="1.83.0 (90b35a623 2024-11-26)" data-channel="1.83.0" data-search-js="search-f0d225181b97f9a4.js" data-settings-js="settings-805db61a62df4bd2.js" ><script src="../../static.files/storage-1d39b6787ed640ff.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-f070b9041d14864c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-0111fcff984fae8f.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../futures_util/index.html">futures_<wbr>util</a><span class="version">0.3.31</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Option<wbr>Future</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#examples" title="Examples">Examples</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-OptionFuture%3CF%3E" title="Clone">Clone</a></li><li><a href="#impl-Debug-for-OptionFuture%3CF%3E" title="Debug">Debug</a></li><li><a href="#impl-Default-for-OptionFuture%3CF%3E" title="Default">Default</a></li><li><a href="#impl-From%3COption%3CT%3E%3E-for-OptionFuture%3CT%3E" title="From&#60;Option&#60;T&#62;&#62;">From&#60;Option&#60;T&#62;&#62;</a></li><li><a href="#impl-FusedFuture-for-OptionFuture%3CF%3E" title="FusedFuture">FusedFuture</a></li><li><a href="#impl-Future-for-OptionFuture%3CF%3E" title="Future">Future</a></li><li><a href="#impl-Unpin-for-OptionFuture%3CF%3E" title="Unpin">Unpin</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-OptionFuture%3CF%3E" title="Freeze">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-OptionFuture%3CF%3E" title="RefUnwindSafe">RefUnwindSafe</a></li><li><a href="#impl-Send-for-OptionFuture%3CF%3E" title="Send">Send</a></li><li><a href="#impl-Sync-for-OptionFuture%3CF%3E" title="Sync">Sync</a></li><li><a href="#impl-UnwindSafe-for-OptionFuture%3CF%3E" title="UnwindSafe">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow&#60;T&#62;">Borrow&#60;T&#62;</a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut&#60;T&#62;">BorrowMut&#60;T&#62;</a></li><li><a href="#impl-CloneToUninit-for-T" title="CloneToUninit">CloneToUninit</a></li><li><a href="#impl-From%3CT%3E-for-T" title="From&#60;T&#62;">From&#60;T&#62;</a></li><li><a href="#impl-FutureExt-for-T" title="FutureExt">FutureExt</a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into&#60;U&#62;">Into&#60;U&#62;</a></li><li><a href="#impl-IntoFuture-for-F" title="IntoFuture">IntoFuture</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom&#60;U&#62;">TryFrom&#60;U&#62;</a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto&#60;U&#62;">TryInto&#60;U&#62;</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="index.html">In futures_<wbr>util::<wbr>future</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="../index.html">futures_util</a>::<wbr><a href="index.html">future</a></span><h1>Struct <span class="struct">OptionFuture</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/futures_util/future/option.rs.html#8-32">source</a> </span></div><pre class="rust item-decl"><code>pub struct OptionFuture&lt;F&gt; { <span class="comment">/* private fields */</span> }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A future representing a value which may or may not be present.</p>
<p>Created by the <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From"><code>From</code></a> implementation for <a href="std::option::Option"><code>Option</code></a>.</p>
<h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>futures::future::OptionFuture;
<span class="kw">let </span><span class="kw-2">mut </span>a: OptionFuture&lt;<span class="kw">_</span>&gt; = <span class="prelude-val">Some</span>(<span class="kw">async </span>{ <span class="number">123 </span>}).into();
<span class="macro">assert_eq!</span>(a.<span class="kw">await</span>, <span class="prelude-val">Some</span>(<span class="number">123</span>));
a = <span class="prelude-val">None</span>.into();
<span class="macro">assert_eq!</span>(a.<span class="kw">await</span>, <span class="prelude-val">None</span>);</code></pre></div>
</div></details><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-OptionFuture%3CF%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#26">source</a><a href="#impl-Clone-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#26">source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&amp;self) -&gt; <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt; <a href="#" class="tooltip" data-notable-ty="OptionFuture&lt;F&gt;"></a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.83.0/src/core/clone.rs.html#174">source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&amp;mut self, source: &amp;Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-OptionFuture%3CF%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#26">source</a><a href="#impl-Debug-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#26">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.83.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.83.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-OptionFuture%3CF%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#34-38">source</a><a href="#impl-Default-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.default" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#35-37">source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -&gt; Self</h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.83.0/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3COption%3CT%3E%3E-for-OptionFuture%3CT%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#60-64">source</a><a href="#impl-From%3COption%3CT%3E%3E-for-OptionFuture%3CT%3E" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.83.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;T&gt;&gt; for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;T&gt;</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#61-63">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(option: <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;T&gt;) -&gt; Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-FusedFuture-for-OptionFuture%3CF%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#51-58">source</a><a href="#impl-FusedFuture-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F: <a class="trait" href="trait.FusedFuture.html" title="trait futures_util::future::FusedFuture">FusedFuture</a>&gt; <a class="trait" href="trait.FusedFuture.html" title="trait futures_util::future::FusedFuture">FusedFuture</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.is_terminated" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#52-57">source</a><a href="#method.is_terminated" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FusedFuture.html#tymethod.is_terminated" class="fn">is_terminated</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>Returns <code>true</code> if the underlying future should no longer be polled.</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Future-for-OptionFuture%3CF%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#40-49">source</a><a href="#impl-Future-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;</h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output" class="associatedtype trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#41">source</a><a href="#associatedtype.Output" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&lt;F as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;</h4></section></summary><div class='docblock'>The type of value produced on completion.</div></details><details class="toggle method-toggle" open><summary><section id="method.poll" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#43-48">source</a><a href="#method.poll" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#tymethod.poll" class="fn">poll</a>(self: <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a>&lt;&amp;mut Self&gt;, cx: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a>&lt;'_&gt;) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a>&lt;Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;</h4></section></summary><div class='docblock'>Attempts to resolve the future to a final value, registering
the current task for wakeup if the value is not yet available. <a href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#tymethod.poll">Read more</a></div></details></div></details><section id="impl-Unpin-for-OptionFuture%3CF%3E" class="impl"><a class="src rightside" href="../../src/futures_util/future/option.rs.html#8-32">source</a><a href="#impl-Unpin-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;'__pin, F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;<div class="where">where
PinnedFieldsOf&lt;__Origin&lt;'__pin, F&gt;&gt;: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</div></h3></section></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-OptionFuture%3CF%3E" class="impl"><a href="#impl-Freeze-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a>,</div></h3></section><section id="impl-RefUnwindSafe-for-OptionFuture%3CF%3E" class="impl"><a href="#impl-RefUnwindSafe-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>,</div></h3></section><section id="impl-Send-for-OptionFuture%3CF%3E" class="impl"><a href="#impl-Send-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,</div></h3></section><section id="impl-Sync-for-OptionFuture%3CF%3E" class="impl"><a href="#impl-Sync-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,</div></h3></section><section id="impl-UnwindSafe-for-OptionFuture%3CF%3E" class="impl"><a href="#impl-UnwindSafe-for-OptionFuture%3CF%3E" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.OptionFuture.html" title="struct futures_util::future::OptionFuture">OptionFuture</a>&lt;F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a>,</div></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/any.rs.html#138">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/any.rs.html#139">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.83.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#209">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#211">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&amp;T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#217">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/borrow.rs.html#218">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.reference.html">&amp;mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.83.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-CloneToUninit-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/clone.rs.html#273">source</a><a href="#impl-CloneToUninit-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/clone/trait.CloneToUninit.html" title="trait core::clone::CloneToUninit">CloneToUninit</a> for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone_to_uninit" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/clone.rs.html#275">source</a><a href="#method.clone_to_uninit" class="anchor">§</a><h4 class="code-header">unsafe fn <a href="https://doc.rust-lang.org/1.83.0/core/clone/trait.CloneToUninit.html#tymethod.clone_to_uninit" class="fn">clone_to_uninit</a>(&amp;self, dst: <a class="primitive" href="https://doc.rust-lang.org/1.83.0/core/primitive.pointer.html">*mut T</a>)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>clone_to_uninit</code>)</span></div></span><div class='docblock'>Performs copy-assignment from <code>self</code> to <code>dst</code>. <a href="https://doc.rust-lang.org/1.83.0/core/clone/trait.CloneToUninit.html#tymethod.clone_to_uninit">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#765">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-1" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -&gt; T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-FutureExt-for-T" class="impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#119">source</a><a href="#impl-FutureExt-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="trait.FutureExt.html" title="trait futures_util::future::FutureExt">FutureExt</a> for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.map" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#146-152">source</a><a href="#method.map" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.map" class="fn">map</a>&lt;U, F&gt;(self, f: F) -&gt; <a class="struct" href="struct.Map.html" title="struct futures_util::future::Map">Map</a>&lt;Self, F&gt; <a href="#" class="tooltip" data-notable-ty="Map&lt;Self, F&gt;"></a><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>) -&gt; U,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Map this futures output to a different type, returning a new future of
the resulting type. <a href="trait.FutureExt.html#method.map">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.map_into" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#159-165">source</a><a href="#method.map_into" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.map_into" class="fn">map_into</a>&lt;U&gt;(self) -&gt; <a class="struct" href="struct.MapInto.html" title="struct futures_util::future::MapInto">MapInto</a>&lt;Self, U&gt; <a href="#" class="tooltip" data-notable-ty="MapInto&lt;Self, U&gt;"></a><div class="where">where
Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Map this futures output to a different type, returning a new future of
the resulting type. <a href="trait.FutureExt.html#method.map_into">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.then" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#191-198">source</a><a href="#method.then" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.then" class="fn">then</a>&lt;Fut, F&gt;(self, f: F) -&gt; <a class="struct" href="struct.Then.html" title="struct futures_util::future::Then">Then</a>&lt;Self, Fut, F&gt; <a href="#" class="tooltip" data-notable-ty="Then&lt;Self, Fut, F&gt;"></a><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>) -&gt; Fut,
Fut: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Chain on a computation for when a future finished, passing the result of
the future to the provided closure <code>f</code>. <a href="trait.FutureExt.html#method.then">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.left_future" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#222-228">source</a><a href="#method.left_future" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.left_future" class="fn">left_future</a>&lt;B&gt;(self) -&gt; <a class="enum" href="enum.Either.html" title="enum futures_util::future::Either">Either</a>&lt;Self, B&gt; <a href="#" class="tooltip" data-notable-ty="Either&lt;Self, B&gt;"></a><div class="where">where
B: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Wrap this future in an <code>Either</code> future, making it the left-hand variant
of that <code>Either</code>. <a href="trait.FutureExt.html#method.left_future">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.right_future" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#252-258">source</a><a href="#method.right_future" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.right_future" class="fn">right_future</a>&lt;A&gt;(self) -&gt; <a class="enum" href="enum.Either.html" title="enum futures_util::future::Either">Either</a>&lt;A, Self&gt; <a href="#" class="tooltip" data-notable-ty="Either&lt;A, Self&gt;"></a><div class="where">where
A: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Wrap this future in an <code>Either</code> future, making it the right-hand variant
of that <code>Either</code>. <a href="trait.FutureExt.html#method.right_future">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.into_stream" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#278-283">source</a><a href="#method.into_stream" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.into_stream" class="fn">into_stream</a>(self) -&gt; <a class="struct" href="struct.IntoStream.html" title="struct futures_util::future::IntoStream">IntoStream</a>&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Convert this future into a single element stream. <a href="trait.FutureExt.html#method.into_stream">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.flatten" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#307-314">source</a><a href="#method.flatten" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.flatten" class="fn">flatten</a>(self) -&gt; <a class="struct" href="struct.Flatten.html" title="struct futures_util::future::Flatten">Flatten</a>&lt;Self&gt; <a href="#" class="tooltip" data-notable-ty="Flatten&lt;Self&gt;"></a><div class="where">where
Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Flatten the execution of this future when the output of this
future is itself another future. <a href="trait.FutureExt.html#method.flatten">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.flatten_stream" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#341-347">source</a><a href="#method.flatten_stream" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.flatten_stream" class="fn">flatten_stream</a>(self) -&gt; <a class="struct" href="struct.FlattenStream.html" title="struct futures_util::future::FlattenStream">FlattenStream</a>&lt;Self&gt;<div class="where">where
Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: <a class="trait" href="../stream/trait.Stream.html" title="trait futures_util::stream::Stream">Stream</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Flatten the execution of this future when the successful result of this
future is a stream. <a href="trait.FutureExt.html#method.flatten_stream">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.fuse" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#365-371">source</a><a href="#method.fuse" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.fuse" class="fn">fuse</a>(self) -&gt; <a class="struct" href="struct.Fuse.html" title="struct futures_util::future::Fuse">Fuse</a>&lt;Self&gt; <a href="#" class="tooltip" data-notable-ty="Fuse&lt;Self&gt;"></a><div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Fuse a future such that <code>poll</code> will never again be called once it has
completed. This method can be used to turn any <code>Future</code> into a
<code>FusedFuture</code>. <a href="trait.FutureExt.html#method.fuse">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.inspect" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#391-397">source</a><a href="#method.inspect" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.inspect" class="fn">inspect</a>&lt;F&gt;(self, f: F) -&gt; <a class="struct" href="struct.Inspect.html" title="struct futures_util::future::Inspect">Inspect</a>&lt;Self, F&gt; <a href="#" class="tooltip" data-notable-ty="Inspect&lt;Self, F&gt;"></a><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&amp;Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>),
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Do something with the output of a future before passing it on. <a href="trait.FutureExt.html#method.inspect">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.unit_error" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#537-542">source</a><a href="#method.unit_error" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.unit_error" class="fn">unit_error</a>(self) -&gt; <a class="struct" href="struct.UnitError.html" title="struct futures_util::future::UnitError">UnitError</a>&lt;Self&gt; <a href="#" class="tooltip" data-notable-ty="UnitError&lt;Self&gt;"></a><div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Turns a <a href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future"><code>Future&lt;Output = T&gt;</code></a> into a
<a href="trait.TryFuture.html" title="trait futures_util::future::TryFuture"><code>TryFuture&lt;Ok = T, Error = ()</code>&gt;</a>.</div></details><details class="toggle method-toggle" open><summary><section id="method.never_error" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#546-551">source</a><a href="#method.never_error" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.never_error" class="fn">never_error</a>(self) -&gt; <a class="struct" href="struct.NeverError.html" title="struct futures_util::future::NeverError">NeverError</a>&lt;Self&gt; <a href="#" class="tooltip" data-notable-ty="NeverError&lt;Self&gt;"></a><div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Turns a <a href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future"><code>Future&lt;Output = T&gt;</code></a> into a
<a href="trait.TryFuture.html" title="trait futures_util::future::TryFuture"><code>TryFuture&lt;Ok = T, Error = Never</code>&gt;</a>.</div></details><details class="toggle method-toggle" open><summary><section id="method.poll_unpin" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#554-559">source</a><a href="#method.poll_unpin" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.poll_unpin" class="fn">poll_unpin</a>(&amp;mut self, cx: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.83.0/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a>&lt;'_&gt;) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a>&lt;Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</div></h4></section></summary><div class='docblock'>A convenience for calling <code>Future::poll</code> on <code>Unpin</code> future types.</div></details><details class="toggle method-toggle" open><summary><section id="method.now_or_never" class="method trait-impl"><a class="src rightside" href="../../src/futures_util/future/future/mod.rs.html#592-605">source</a><a href="#method.now_or_never" class="anchor">§</a><h4 class="code-header">fn <a href="trait.FutureExt.html#method.now_or_never" class="fn">now_or_never</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Evaluates and consumes the future, returning the resulting output if
the future is ready after the first call to <code>Future::poll</code>. <a href="trait.FutureExt.html#method.now_or_never">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#748-750">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#758">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -&gt; U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for U</code> chooses to do.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IntoFuture-for-F" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/future/into_future.rs.html#138">source</a><a href="#impl-IntoFuture-for-F" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html" title="trait core::future::into_future::IntoFuture">IntoFuture</a> for F<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/future/into_future.rs.html#139">source</a><a href="#associatedtype.Output-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html#associatedtype.Output" class="associatedtype">Output</a> = &lt;F as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a></h4></section></summary><div class='docblock'>The output that the future will produce on completion.</div></details><details class="toggle" open><summary><section id="associatedtype.IntoFuture" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/future/into_future.rs.html#140">source</a><a href="#associatedtype.IntoFuture" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html#associatedtype.IntoFuture" class="associatedtype">IntoFuture</a> = F</h4></section></summary><div class='docblock'>Which kind of future are we turning this into?</div></details><details class="toggle method-toggle" open><summary><section id="method.into_future" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/future/into_future.rs.html#142">source</a><a href="#method.into_future" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html#tymethod.into_future" class="fn">into_future</a>(self) -&gt; &lt;F as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html" title="trait core::future::into_future::IntoFuture">IntoFuture</a>&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html#associatedtype.IntoFuture" title="type core::future::into_future::IntoFuture::IntoFuture">IntoFuture</a></h4></section></summary><div class='docblock'>Creates a future from a value. <a href="https://doc.rust-lang.org/1.83.0/core/future/into_future/trait.IntoFuture.html#tymethod.into_future">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#805-807">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#809">source</a><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#812">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#790-792">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#794">source</a><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.83.0/src/core/convert/mod.rs.html#797">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.83.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.83.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div><script type="text/json" id="notable-traits-data">{"Either<A, Self>":"<h3>Notable traits for <code><a class=\"enum\" href=\"enum.Either.html\" title=\"enum futures_util::future::Either\">Either</a>&lt;A, B&gt;</code></h3><pre><code><div class=\"where\">impl&lt;A, B&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"enum\" href=\"enum.Either.html\" title=\"enum futures_util::future::Either\">Either</a>&lt;A, B&gt;<div class=\"where\">where\n A: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,\n B: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&lt;Output = A::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>&gt;,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = A::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","Either<Self, B>":"<h3>Notable traits for <code><a class=\"enum\" href=\"enum.Either.html\" title=\"enum futures_util::future::Either\">Either</a>&lt;A, B&gt;</code></h3><pre><code><div class=\"where\">impl&lt;A, B&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"enum\" href=\"enum.Either.html\" title=\"enum futures_util::future::Either\">Either</a>&lt;A, B&gt;<div class=\"where\">where\n A: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,\n B: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&lt;Output = A::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>&gt;,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = A::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","Flatten<Self>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Flatten.html\" title=\"struct futures_util::future::Flatten\">Flatten</a>&lt;F&gt;</code></h3><pre><code><div class=\"where\">impl&lt;F&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.Flatten.html\" title=\"struct futures_util::future::Flatten\">Flatten</a>&lt;F&gt;<div class=\"where\">where\n Flatten&lt;F, &lt;F as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,\n F: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;Flatten&lt;F, &lt;F as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","Fuse<Self>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Fuse.html\" title=\"struct futures_util::future::Fuse\">Fuse</a>&lt;Fut&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.Fuse.html\" title=\"struct futures_util::future::Fuse\">Fuse</a>&lt;Fut&gt;</div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = Fut::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","Inspect<Self, F>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Inspect.html\" title=\"struct futures_util::future::Inspect\">Inspect</a>&lt;Fut, F&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut, F&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.Inspect.html\" title=\"struct futures_util::future::Inspect\">Inspect</a>&lt;Fut, F&gt;<div class=\"where\">where\n Map&lt;Fut, InspectFn&lt;F&gt;&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;Map&lt;Fut, InspectFn&lt;F&gt;&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","Map<Self, F>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, F&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut, F&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, F&gt;<div class=\"where\">where\n Map&lt;Fut, F&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;Map&lt;Fut, F&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","MapInto<Self, U>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.MapInto.html\" title=\"struct futures_util::future::MapInto\">MapInto</a>&lt;Fut, T&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut, T&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.MapInto.html\" title=\"struct futures_util::future::MapInto\">MapInto</a>&lt;Fut, T&gt;<div class=\"where\">where\n <a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, IntoFn&lt;T&gt;&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;<a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, IntoFn&lt;T&gt;&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","NeverError<Self>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.NeverError.html\" title=\"struct futures_util::future::NeverError\">NeverError</a>&lt;Fut&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.NeverError.html\" title=\"struct futures_util::future::NeverError\">NeverError</a>&lt;Fut&gt;<div class=\"where\">where\n <a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, OkFn&lt;<a class=\"type\" href=\"../never/type.Never.html\" title=\"type futures_util::never::Never\">Never</a>&gt;&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;<a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, OkFn&lt;<a class=\"type\" href=\"../never/type.Never.html\" title=\"type futures_util::never::Never\">Never</a>&gt;&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","OptionFuture<F>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.OptionFuture.html\" title=\"struct futures_util::future::OptionFuture\">OptionFuture</a>&lt;F&gt;</code></h3><pre><code><div class=\"where\">impl&lt;F: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.OptionFuture.html\" title=\"struct futures_util::future::OptionFuture\">OptionFuture</a>&lt;F&gt;</div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = <a class=\"enum\" href=\"https://doc.rust-lang.org/1.83.0/core/option/enum.Option.html\" title=\"enum core::option::Option\">Option</a>&lt;F::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>&gt;;</div>","Then<Self, Fut, F>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.Then.html\" title=\"struct futures_util::future::Then\">Then</a>&lt;Fut1, Fut2, F&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut1, Fut2, F&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.Then.html\" title=\"struct futures_util::future::Then\">Then</a>&lt;Fut1, Fut2, F&gt;<div class=\"where\">where\n Flatten&lt;<a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut1, F&gt;, Fut2&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;Flatten&lt;<a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut1, F&gt;, Fut2&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>","UnitError<Self>":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.UnitError.html\" title=\"struct futures_util::future::UnitError\">UnitError</a>&lt;Fut&gt;</code></h3><pre><code><div class=\"where\">impl&lt;Fut&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"struct\" href=\"struct.UnitError.html\" title=\"struct futures_util::future::UnitError\">UnitError</a>&lt;Fut&gt;<div class=\"where\">where\n <a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, OkFn&lt;<a class=\"primitive\" href=\"https://doc.rust-lang.org/1.83.0/core/primitive.unit.html\">()</a>&gt;&gt;: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = &lt;<a class=\"struct\" href=\"struct.Map.html\" title=\"struct futures_util::future::Map\">Map</a>&lt;Fut, OkFn&lt;<a class=\"primitive\" href=\"https://doc.rust-lang.org/1.83.0/core/primitive.unit.html\">()</a>&gt;&gt; as <a class=\"trait\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&gt;::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.83.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div>"}</script></section></div></main></body></html>