| <!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="Owned RAII structure used to release the exclusive write access of a lock when dropped."><meta name="keywords" content="rust, rustlang, rust-lang, OwnedRwLockMappedWriteGuard"><title>OwnedRwLockMappedWriteGuard in tokio::sync - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" 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class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../tokio/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../tokio/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">OwnedRwLockMappedWriteGuard</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.map">map</a></li><li><a href="#method.try_map">try_map</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Debug-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Debug</a></li><li><a href="#impl-Deref-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Deref</a></li><li><a href="#impl-DerefMut-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">DerefMut</a></li><li><a href="#impl-Display-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Display</a></li><li><a href="#impl-Drop-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Drop</a></li><li><a href="#impl-Send-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Send</a></li><li><a href="#impl-Sync-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Sync</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">!RefUnwindSafe</a></li><li><a href="#impl-Unpin-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Unpin</a></li><li><a href="#impl-UnwindSafe-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">!UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">Into<U></a></li><li><a href="#impl-ToString-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">ToString</a></li><li><a href="#impl-TryFrom%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E">TryInto<U></a></li></ul></section><h2><a href="index.html">In tokio::sync</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="../index.html">tokio</a>::<wbr><a href="index.html">sync</a>::<wbr><a class="struct" href="#">OwnedRwLockMappedWriteGuard</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#16-25">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct OwnedRwLockMappedWriteGuard<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> = T> { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Owned RAII structure used to release the exclusive write access of a lock when |
| dropped.</p> |
| <p>This structure is created by <a href="struct.OwnedRwLockWriteGuard.html#method.map">mapping</a> an <a href="struct.OwnedRwLockWriteGuard.html"><code>OwnedRwLockWriteGuard</code></a>. It is a |
| separate type from <code>OwnedRwLockWriteGuard</code> to disallow downgrading a mapped |
| guard, since doing so can cause undefined behavior.</p> |
| </div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#36-158">source</a><a href="#impl-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.map" class="method has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#85-100">source</a><h4 class="code-header">pub fn <a href="#method.map" class="fnname">map</a><F, V: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>>(this: Self, f: F) -> <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, V><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>U) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>V,</span></h4></section></summary><div class="docblock"><p>Makes a new <code>OwnedRwLockMappedWriteGuard</code> for a component of the locked |
| data.</p> |
| <p>This operation cannot fail as the <code>OwnedRwLockMappedWriteGuard</code> passed |
| in already locked the data.</p> |
| <p>This is an associated function that needs to be used as |
| <code>OwnedRwLockWriteGuard::map(..)</code>. A method would interfere with methods |
| of the same name on the contents of the locked data.</p> |
| <h5 id="examples"><a href="#examples">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::sync::Arc; |
| <span class="kw">use </span>tokio::sync::{RwLock, OwnedRwLockWriteGuard}; |
| |
| <span class="attribute">#[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| </span><span class="kw">struct </span>Foo(u32); |
| |
| <span class="kw">let </span>lock = Arc::new(RwLock::new(Foo(<span class="number">1</span>))); |
| |
| { |
| <span class="kw">let </span>lock = Arc::clone(<span class="kw-2">&</span>lock); |
| <span class="kw">let </span><span class="kw-2">mut </span>mapped = OwnedRwLockWriteGuard::map(lock.write_owned().<span class="kw">await</span>, |f| <span class="kw-2">&mut </span>f.<span class="number">0</span>); |
| <span class="kw-2">*</span>mapped = <span class="number">2</span>; |
| } |
| |
| <span class="macro">assert_eq!</span>(Foo(<span class="number">2</span>), <span class="kw-2">*</span>lock.read().<span class="kw">await</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_map" class="method has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#136-157">source</a><h4 class="code-header">pub fn <a href="#method.try_map" class="fnname">try_map</a><F, V: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>>(<br> this: Self,<br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, V>, Self><span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>V>,</span></h4></section></summary><div class="docblock"><p>Attempts to make a new <code>OwnedRwLockMappedWriteGuard</code> for a component |
| of the locked data. The original guard is returned if the closure |
| returns <code>None</code>.</p> |
| <p>This operation cannot fail as the <code>OwnedRwLockMappedWriteGuard</code> passed |
| in already locked the data.</p> |
| <p>This is an associated function that needs to be |
| used as <code>OwnedRwLockMappedWriteGuard::try_map(...)</code>. A method would interfere with |
| methods of the same name on the contents of the locked data.</p> |
| <h5 id="examples-1"><a href="#examples-1">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::sync::Arc; |
| <span class="kw">use </span>tokio::sync::{RwLock, OwnedRwLockWriteGuard}; |
| |
| <span class="attribute">#[derive(Debug, Clone, Copy, PartialEq, Eq)] |
| </span><span class="kw">struct </span>Foo(u32); |
| |
| <span class="kw">let </span>lock = Arc::new(RwLock::new(Foo(<span class="number">1</span>))); |
| |
| { |
| <span class="kw">let </span>guard = Arc::clone(<span class="kw-2">&</span>lock).write_owned().<span class="kw">await</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>guard = OwnedRwLockWriteGuard::try_map(guard, |f| <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>f.<span class="number">0</span>)).expect(<span class="string">"should not fail"</span>); |
| <span class="kw-2">*</span>guard = <span class="number">2</span>; |
| } |
| |
| <span class="macro">assert_eq!</span>(Foo(<span class="number">2</span>), <span class="kw-2">*</span>lock.read().<span class="kw">await</span>);</code></pre></div> |
| </div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#174-181">source</a><a href="#impl-Debug-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U><span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#178-180">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/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/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Deref-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#160-166">source</a><a href="#impl-Deref-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Target" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Target" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#associatedtype.Target" class="associatedtype">Target</a> = U</h4></section></summary><div class='docblock'>The resulting type after dereferencing.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#163-165">source</a><a href="#method.deref" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.Deref.html#tymethod.deref" class="fnname">deref</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>U</h4></section></summary><div class='docblock'>Dereferences the value.</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-DerefMut-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#168-172">source</a><a href="#impl-DerefMut-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html" title="trait core::ops::deref::DerefMut">DerefMut</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.deref_mut" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#169-171">source</a><a href="#method.deref_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/deref/trait.DerefMut.html#tymethod.deref_mut" class="fnname">deref_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>U</h4></section></summary><div class='docblock'>Mutably dereferences the value.</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Display-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#183-190">source</a><a href="#impl-Display-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U><span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#187-189">source</a><a href="#method.fmt-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/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/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Drop-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#192-205">source</a><a href="#impl-Drop-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.drop" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock/owned_write_guard_mapped.rs.html#193-204">source</a><a href="#method.drop" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop" class="fnname">drop</a>(&mut self)</h4></section></summary><div class='docblock'>Executes the destructor for this type. <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></div></details></div></details><section id="impl-Send-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock.rs.html#186-191">source</a><a href="#impl-Send-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U><span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,<br> U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,</span></h3></section><section id="impl-Sync-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="../../src/tokio/sync/rwlock.rs.html#173-178">source</a><a href="#impl-Sync-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U><span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,<br> U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,</span></h3></section></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U = T> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U></h3></section><section id="impl-Unpin-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a href="#impl-Unpin-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, U: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</span></h3></section><section id="impl-UnwindSafe-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a href="#impl-UnwindSafe-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U = T> !<a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.OwnedRwLockMappedWriteGuard.html" title="struct tokio::sync::OwnedRwLockMappedWriteGuard">OwnedRwLockMappedWriteGuard</a><T, U></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#200">source</a><a href="#impl-Any-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#201">source</a><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/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/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#impl-Borrow%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220">source</a><a href="#impl-BorrowMut%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#733">source</a><a href="#impl-From%3CT%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#736">source</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#717">source</a><a href="#impl-Into%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#725">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> 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/nightly/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToString-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2497">source</a><a href="#impl-ToString-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_string" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2503">source</a><a href="#method.to_string" class="anchor"></a><h4 class="code-header">default fn <a href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string" class="fnname">to_string</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></summary><div class='docblock'>Converts the given value to a <code>String</code>. <a href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#775">source</a><a href="#impl-TryFrom%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/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="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#781">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#760">source</a><a href="#impl-TryInto%3CU%3E-for-OwnedRwLockMappedWriteGuard%3CT%2C%20U%3E" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/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="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#766">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="tokio" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
