<!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 `Generator` trait in crate `std`."><meta name="keywords" content="rust, rustlang, rust-lang, Generator"><title>std::ops::Generator - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize1.35.0.css"><link rel="stylesheet" type="text/css" href="../../rustdoc1.35.0.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark1.35.0.css"><link rel="stylesheet" type="text/css" href="../../light1.35.0.css" id="themeStyle"><script src="../../storage1.35.0.js"></script><noscript><link rel="stylesheet" href="../../noscript1.35.0.css"></noscript><link rel="shortcut icon" href="../../favicon1.35.0.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow1.35.0.svg");}</style></head><body class="rustdoc trait"><!--[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">☰</div><a href='../../std/index.html'><img src='../../rust-logo1.35.0.png' alt='logo' width='100'></a><p class='location'>Trait Generator</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#associated-types">Associated Types</a><div class="sidebar-links"><a href="#associatedtype.Yield">Yield</a><a href="#associatedtype.Return">Return</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.resume">resume</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>std</a>::<wbr><a href='index.html'>ops</a></p><script>window.sidebarCurrent = {name: 'Generator', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush1.35.0.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme1.35.0.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel1.35.0.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span class='since' title='Stable since Rust version '></span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/core/ops/generator.rs.html#70-114' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../index.html'>std</a>::<wbr><a href='index.html'>ops</a>::<wbr><a class="trait" href=''>Generator</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'><div class="docblock attributes">#[lang = "generator"]
</div>pub trait Generator {
type <a href='#associatedtype.Yield' class="type">Yield</a>;
type <a href='#associatedtype.Return' class="type">Return</a>;
fn <a href='#tymethod.resume' class='fnname'>resume</a>(self: <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="primitive" href="../primitive.reference.html">&mut </a>Self>) -> <a class="enum" href="../../std/ops/enum.GeneratorState.html" title="enum std::ops::GeneratorState">GeneratorState</a><Self::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a>, Self::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a>>;
}</pre></div><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><div class='docblock'><p>The trait implemented by builtin generator types.</p>
<p>Generators, also commonly referred to as coroutines, are currently an
experimental language feature in Rust. Added in <a href="https://github.com/rust-lang/rfcs/pull/2033">RFC 2033</a> generators are
currently intended to primarily provide a building block for async/await
syntax but will likely extend to also providing an ergonomic definition for
iterators and other primitives.</p>
<p>The syntax and semantics for generators is unstable and will require a
further RFC for stabilization. At this time, though, the syntax is
closure-like:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="attribute">#![<span class="ident">feature</span>(<span class="ident">generators</span>, <span class="ident">generator_trait</span>)]</span>
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::{<span class="ident">Generator</span>, <span class="ident">GeneratorState</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">pin</span>::<span class="ident">Pin</span>;
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">generator</span> <span class="op">=</span> <span class="op">||</span> {
<span class="kw">yield</span> <span class="number">1</span>;
<span class="kw">return</span> <span class="string">"foo"</span>
};
<span class="kw">match</span> <span class="ident">Pin</span>::<span class="ident">new</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">generator</span>).<span class="ident">resume</span>() {
<span class="ident">GeneratorState</span>::<span class="ident">Yielded</span>(<span class="number">1</span>) <span class="op">=></span> {}
<span class="kw">_</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"unexpected return from resume"</span>),
}
<span class="kw">match</span> <span class="ident">Pin</span>::<span class="ident">new</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">generator</span>).<span class="ident">resume</span>() {
<span class="ident">GeneratorState</span>::<span class="ident">Complete</span>(<span class="string">"foo"</span>) <span class="op">=></span> {}
<span class="kw">_</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"unexpected return from resume"</span>),
}
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0A%23!%5Bfeature(generators%2C%20generator_trait)%5D%0A%0Ause%20std%3A%3Aops%3A%3A%7BGenerator%2C%20GeneratorState%7D%3B%0Ause%20std%3A%3Apin%3A%3APin%3B%0A%0Afn%20main()%20%7B%0A%20%20%20%20let%20mut%20generator%20%3D%20%7C%7C%20%7B%0A%20%20%20%20%20%20%20%20yield%201%3B%0A%20%20%20%20%20%20%20%20return%20%22foo%22%0A%20%20%20%20%7D%3B%0A%0A%20%20%20%20match%20Pin%3A%3Anew(%26mut%20generator).resume()%20%7B%0A%20%20%20%20%20%20%20%20GeneratorState%3A%3AYielded(1)%20%3D%3E%20%7B%7D%0A%20%20%20%20%20%20%20%20_%20%3D%3E%20panic!(%22unexpected%20return%20from%20resume%22)%2C%0A%20%20%20%20%7D%0A%20%20%20%20match%20Pin%3A%3Anew(%26mut%20generator).resume()%20%7B%0A%20%20%20%20%20%20%20%20GeneratorState%3A%3AComplete(%22foo%22)%20%3D%3E%20%7B%7D%0A%20%20%20%20%20%20%20%20_%20%3D%3E%20panic!(%22unexpected%20return%20from%20resume%22)%2C%0A%20%20%20%20%7D%0A%7D&version=nightly">Run</a></pre></div>
<p>More documentation of generators can be found in the unstable book.</p>
</div>
<h2 id='associated-types' class='small-section-header'>Associated Types<a href='#associated-types' class='anchor'></a></h2><div class='methods'><h3 id='associatedtype.Yield' class='method'><code id='Yield.t'>type <a href='#associatedtype.Yield' class="type">Yield</a></code></h3><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><div class='docblock'><p>The type of value this generator yields.</p>
<p>This associated type corresponds to the <code>yield</code> expression and the
values which are allowed to be returned each time a generator yields.
For example an iterator-as-a-generator would likely have this type as
<code>T</code>, the type being iterated over.</p>
</div><h3 id='associatedtype.Return' class='method'><code id='Return.t'>type <a href='#associatedtype.Return' class="type">Return</a></code></h3><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><div class='docblock'><p>The type of value this generator returns.</p>
<p>This corresponds to the type returned from a generator either with a
<code>return</code> statement or implicitly as the last expression of a generator
literal. For example futures would use this as <code>Result<T, E></code> as it
represents a completed future.</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.resume' class='method'><code id='resume.v'>fn <a href='#tymethod.resume' class='fnname'>resume</a>(self: <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="primitive" href="../primitive.reference.html">&mut </a>Self>) -> <a class="enum" href="../../std/ops/enum.GeneratorState.html" title="enum std::ops::GeneratorState">GeneratorState</a><Self::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a>, Self::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a>></code></h3><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><div class='docblock'><p>Resumes the execution of this generator.</p>
<p>This function will resume execution of the generator or start execution
if it hasn't already. This call will return back into the generator's
last suspension point, resuming execution from the latest <code>yield</code>. The
generator will continue executing until it either yields or returns, at
which point this function will return.</p>
<h1 id="return-value" class="section-header"><a href="#return-value">Return value</a></h1>
<p>The <code>GeneratorState</code> enum returned from this function indicates what
state the generator is in upon returning. If the <code>Yielded</code> variant is
returned then the generator has reached a suspension point and a value
has been yielded out. Generators in this state are available for
resumption at a later point.</p>
<p>If <code>Complete</code> is returned then the generator has completely finished
with the value provided. It is invalid for the generator to be resumed
again.</p>
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
<p>This function may panic if it is called after the <code>Complete</code> variant has
been returned previously. While generator literals in the language are
guaranteed to panic on resuming after <code>Complete</code>, this is not guaranteed
for all implementations of the <code>Generator</code> trait.</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-Generator' class='impl'><code class='in-band'>impl<'_, G> Generator for <a class="primitive" href="../primitive.reference.html">&'_ mut </a>G <span class="where fmt-newline">where<br> G: <a class="trait" href="../../std/marker/trait.Unpin.html" title="trait std::marker::Unpin">Unpin</a> + <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code><a href='#impl-Generator' class='anchor'></a><a class='srclink' href='../../src/core/ops/generator.rs.html#127-134' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Yield-1' class="type"><code id='Yield.t-1'>type <a href='#associatedtype.Yield-1' class="type">Yield</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='associatedtype.Return-1' class="type"><code id='Return.t-1'>type <a href='#associatedtype.Return-1' class="type">Return</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='method.resume' class="method hidden"><code id='resume.v-1'>fn <a href='#method.resume' class='fnname'>resume</a>(<br> self: <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><&mut <a class="primitive" href="../primitive.reference.html">&'_ mut </a>G><br>) -> <a class="enum" href="../../std/ops/enum.GeneratorState.html" title="enum std::ops::GeneratorState">GeneratorState</a><<<a class="primitive" href="../primitive.reference.html">&'_ mut </a>G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a>, <<a class="primitive" href="../primitive.reference.html">&'_ mut </a>G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a>></code><a class='srclink' href='../../src/core/ops/generator.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div></div><h3 id='impl-Generator-1' class='impl'><code class='in-band'>impl<'_, G> Generator for <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="primitive" href="../primitive.reference.html">&'_ mut </a>G> <span class="where fmt-newline">where<br> G: <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code><a href='#impl-Generator-1' class='anchor'></a><a class='srclink' href='../../src/core/ops/generator.rs.html#117-124' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Yield-2' class="type"><code id='Yield.t-2'>type <a href='#associatedtype.Yield-2' class="type">Yield</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='associatedtype.Return-2' class="type"><code id='Return.t-2'>type <a href='#associatedtype.Return-2' class="type">Return</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='method.resume-1' class="method hidden"><code id='resume.v-2'>fn <a href='#method.resume-1' class='fnname'>resume</a>(<br> self: <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><&mut <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="primitive" href="../primitive.reference.html">&'_ mut </a>G>><br>) -> <a class="enum" href="../../std/ops/enum.GeneratorState.html" title="enum std::ops::GeneratorState">GeneratorState</a><<<a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="primitive" href="../primitive.reference.html">&'_ mut </a>G> as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a>, <<a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="primitive" href="../primitive.reference.html">&'_ mut </a>G> as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a>></code><a class='srclink' href='../../src/core/ops/generator.rs.html#121-123' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div></div><h3 id='impl-Generator-2' class='impl'><code class='in-band'>impl<G> Generator for <a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G> <span class="where fmt-newline">where<br> G: <a class="trait" href="../../std/marker/trait.Unpin.html" title="trait std::marker::Unpin">Unpin</a> + <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code><a href='#impl-Generator-2' class='anchor'></a><a class='srclink' href='../../src/alloc/boxed.rs.html#892-899' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Yield-3' class="type"><code id='Yield.t-3'>type <a href='#associatedtype.Yield-3' class="type">Yield</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='associatedtype.Return-3' class="type"><code id='Return.t-3'>type <a href='#associatedtype.Return-3' class="type">Return</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='method.resume-2' class="method hidden"><code id='resume.v-3'>fn <a href='#method.resume-2' class='fnname'>resume</a>(<br> self: <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><&mut <a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G>><br>) -> <a class="enum" href="../../std/ops/enum.GeneratorState.html" title="enum std::ops::GeneratorState">GeneratorState</a><<<a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G> as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a>, <<a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G> as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a>></code><a class='srclink' href='../../src/alloc/boxed.rs.html#896-898' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div></div><h3 id='impl-Generator-3' class='impl'><code class='in-band'>impl<G> Generator for <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G>> <span class="where fmt-newline">where<br> G: <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code><a href='#impl-Generator-3' class='anchor'></a><a class='srclink' href='../../src/alloc/boxed.rs.html#902-909' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Yield-4' class="type"><code id='Yield.t-4'>type <a href='#associatedtype.Yield-4' class="type">Yield</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='associatedtype.Return-4' class="type"><code id='Return.t-4'>type <a href='#associatedtype.Return-4' class="type">Return</a> = <G as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a></code></h4><div class='stability'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div><h4 id='method.resume-3' class="method hidden"><code id='resume.v-4'>fn <a href='#method.resume-3' class='fnname'>resume</a>(<br> self: <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><&mut <a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G>>><br>) -> <a class="enum" href="../../std/ops/enum.GeneratorState.html" title="enum std::ops::GeneratorState">GeneratorState</a><<<a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G>> as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Yield" title="type std::ops::Generator::Yield">Yield</a>, <<a class="struct" href="../../std/pin/struct.Pin.html" title="struct std::pin::Pin">Pin</a><<a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><G>> as <a class="trait" href="../../std/ops/trait.Generator.html" title="trait std::ops::Generator">Generator</a>>::<a class="type" href="../../std/ops/trait.Generator.html#associatedtype.Return" title="type std::ops::Generator::Return">Return</a>></code><a class='srclink' href='../../src/alloc/boxed.rs.html#906-908' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>generator_trait</code> <a href="https://github.com/rust-lang/rust/issues/43122">#43122</a>)</div></div></div></div><span class='loading-content'>Loading content...</span><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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