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<p class='location'>Trait BorrowMut</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.borrow_mut">borrow_mut</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'>borrow</a></p><script>window.sidebarCurrent = {name: 'BorrowMut', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>std</a>::<wbr><a href='index.html'>borrow</a>::<wbr><a class="trait" href=''>BorrowMut</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</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/borrow.rs.html#64-82' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait BorrowMut<Borrowed>: <a class="trait" href="../../std/borrow/trait.Borrow.html" title="trait std::borrow::Borrow">Borrow</a><Borrowed> <span class="where fmt-newline">where<br> Borrowed: ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span>{
fn <a href='#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&mut self) -> <a class="primitive" href="../primitive.reference.html">&mut </a>Borrowed;
}</pre><div class='docblock'><p>A trait for mutably borrowing data.</p>
<p>Similar to <code>Borrow</code>, but for mutable borrows.</p>
</div>
<h2 id='required-methods' class='small-section-header'>
Required Methods<a href='#required-methods' class='anchor'></a>
</h2>
<div class='methods'>
<div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="primitive" href="../primitive.reference.html">&'a mut </a>I</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="primitive" href="../primitive.reference.html">&'a mut </a>I</h3><code class="content"><span class="where fmt-newline">impl<'a, I> <a class="trait" href="../../std/iter/trait.Iterator.html" title="trait std::iter::Iterator">Iterator</a> for <a class="primitive" href="../primitive.reference.html">&'a mut </a>I <span class="where fmt-newline">where<br> I: <a class="trait" href="../../std/iter/trait.Iterator.html" title="trait std::iter::Iterator">Iterator</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></span><span class="where fmt-newline"> type <a href='../../std/iter/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <I as <a class="trait" href="../../std/iter/trait.Iterator.html" title="trait std::iter::Iterator">Iterator</a>>::<a class="type" href="../../std/iter/trait.Iterator.html#associatedtype.Item" title="type std::iter::Iterator::Item">Item</a>;</span><span class="where fmt-newline">impl<'a, R: <a class="trait" href="../../std/io/trait.Read.html" title="trait std::io::Read">Read</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>> <a class="trait" href="../../std/io/trait.Read.html" title="trait std::io::Read">Read</a> for <a class="primitive" href="../primitive.reference.html">&'a mut </a>R</span><span class="where fmt-newline">impl<'a, W: <a class="trait" href="../../std/io/trait.Write.html" title="trait std::io::Write">Write</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>> <a class="trait" href="../../std/io/trait.Write.html" title="trait std::io::Write">Write</a> for <a class="primitive" href="../primitive.reference.html">&'a mut </a>W</span></code></div></div><h3 id='tymethod.borrow_mut' class='method'><span id='borrow_mut.v' class='invisible'><code>fn <a href='#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&mut self) -> <a class="primitive" href="../primitive.reference.html">&mut </a>Borrowed</code></span></h3><div class='docblock'><p>Mutably borrows from an owned value.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">borrow</span>::<span class="ident">BorrowMut</span>;
<span class="kw">fn</span> <span class="ident">check</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">BorrowMut</span><span class="op"><</span>[<span class="ident">i32</span>]<span class="op">>></span>(<span class="kw-2">mut</span> <span class="ident">v</span>: <span class="ident">T</span>) {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>], <span class="ident">v</span>.<span class="ident">borrow_mut</span>());
}
<span class="kw">let</span> <span class="ident">v</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
<span class="ident">check</span>(<span class="ident">v</span>);<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Afn%20main()%20%7B%0Ause%20std%3A%3Aborrow%3A%3ABorrowMut%3B%0A%0Afn%20check%3CT%3A%20BorrowMut%3C%5Bi32%5D%3E%3E(mut%20v%3A%20T)%20%7B%0A%20%20%20%20assert_eq!(%26mut%20%5B1%2C%202%2C%203%5D%2C%20v.borrow_mut())%3B%0A%7D%0A%0Alet%20v%20%3D%20vec!%5B1%2C%202%2C%203%5D%3B%0A%0Acheck(v)%3B%0A%7D">Run</a></pre>
</div></div>
<h2 id='implementors' class='small-section-header'>
Implementors<a href='#implementors' class='anchor'></a>
</h2>
<ul class='item-list' id='implementors-list'>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 12]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 22]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 27]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 14]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 17]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 20]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 18]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 3]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 1]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 24]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 28]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 7]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 19]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 2]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 0]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 25]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 29]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 6]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 21]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/borrow.rs.html#105-107' title='goto source code'>[src]</a></div><code>impl<'a, T> BorrowMut<T> for <a class="primitive" href="../primitive.reference.html">&'a mut </a>T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 4]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 11]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 5]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 31]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 30]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 26]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 32]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 10]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 16]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/borrow.rs.html#90-92' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 8]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 15]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 9]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 13]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/array.rs.html#145-149' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="primitive" href="../primitive.array.html">[</a>T<a class="primitive" href="../primitive.array.html">; 23]</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/alloc/boxed.rs.html#874-878' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<T> for <a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><T> <span class="where fmt-newline">where<br> T: ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/alloc/slice.rs.html#1930-1934' title='goto source code'>[src]</a></div><code>impl<T> BorrowMut<<a class="primitive" href="../primitive.slice.html">[</a>T<a class="primitive" href="../primitive.slice.html">]</a>> for <a class="struct" href="../../std/vec/struct.Vec.html" title="struct std::vec::Vec">Vec</a><T></code></li>
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