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<p class='location'>Trait AddAssign</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.add_assign">add_assign</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>core</a>::<wbr><a href='index.html'>ops</a></p><script>window.sidebarCurrent = {name: 'AddAssign', 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'>core</a>::<wbr><a href='index.html'>ops</a>::<wbr><a class="trait" href=''>AddAssign</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.8.0'>1.8.0</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/ops/arith.rs.html#667-671' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'><div class="docblock attributes">#[lang = "add_assign"]
</div>pub trait AddAssign<Rhs = Self> {
fn <a href='#tymethod.add_assign' class='fnname'>add_assign</a>(&mut self, rhs: Rhs);
}</pre><div class='docblock'><p>The addition assignment operator <code>+=</code>.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<p>This example creates a <code>Point</code> struct that implements the <code>AddAssign</code>
trait, and then demonstrates add-assigning to a mutable <code>Point</code>.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::<span class="ident">AddAssign</span>;
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">struct</span> <span class="ident">Point</span> {
<span class="ident">x</span>: <span class="ident">i32</span>,
<span class="ident">y</span>: <span class="ident">i32</span>,
}
<span class="kw">impl</span> <span class="ident">AddAssign</span> <span class="kw">for</span> <span class="ident">Point</span> {
<span class="kw">fn</span> <span class="ident">add_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">other</span>: <span class="ident">Point</span>) {
<span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="ident">Point</span> {
<span class="ident">x</span>: <span class="self">self</span>.<span class="ident">x</span> <span class="op">+</span> <span class="ident">other</span>.<span class="ident">x</span>,
<span class="ident">y</span>: <span class="self">self</span>.<span class="ident">y</span> <span class="op">+</span> <span class="ident">other</span>.<span class="ident">y</span>,
};
}
}
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">point</span> <span class="op">=</span> <span class="ident">Point</span> { <span class="ident">x</span>: <span class="number">1</span>, <span class="ident">y</span>: <span class="number">0</span> };
<span class="ident">point</span> <span class="op">+=</span> <span class="ident">Point</span> { <span class="ident">x</span>: <span class="number">2</span>, <span class="ident">y</span>: <span class="number">3</span> };
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">point</span>, <span class="ident">Point</span> { <span class="ident">x</span>: <span class="number">3</span>, <span class="ident">y</span>: <span class="number">3</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%3Aops%3A%3AAddAssign%3B%0A%0A%23%5Bderive(Debug%2C%20PartialEq)%5D%0Astruct%20Point%20%7B%0A%20%20%20%20x%3A%20i32%2C%0A%20%20%20%20y%3A%20i32%2C%0A%7D%0A%0Aimpl%20AddAssign%20for%20Point%20%7B%0A%20%20%20%20fn%20add_assign(%26mut%20self%2C%20other%3A%20Point)%20%7B%0A%20%20%20%20%20%20%20%20*self%20%3D%20Point%20%7B%0A%20%20%20%20%20%20%20%20%20%20%20%20x%3A%20self.x%20%2B%20other.x%2C%0A%20%20%20%20%20%20%20%20%20%20%20%20y%3A%20self.y%20%2B%20other.y%2C%0A%20%20%20%20%20%20%20%20%7D%3B%0A%20%20%20%20%7D%0A%7D%0A%0Alet%20mut%20point%20%3D%20Point%20%7B%20x%3A%201%2C%20y%3A%200%20%7D%3B%0Apoint%20%2B%3D%20Point%20%7B%20x%3A%202%2C%20y%3A%203%20%7D%3B%0Aassert_eq!(point%2C%20Point%20%7B%20x%3A%203%2C%20y%3A%203%20%7D)%3B%0A%7D">Run</a></pre>
</div>
<h2 id='required-methods' class='small-section-header'>
Required Methods<a href='#required-methods' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='tymethod.add_assign' class='method'><span id='add_assign.v' class='invisible'><code>fn <a href='#tymethod.add_assign' class='fnname'>add_assign</a>(&mut self, rhs: Rhs)</code></span></h3><div class='docblock'><p>Performs the <code>+=</code> operation.</p>
</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/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><usize></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><usize>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><usize></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u8></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u8>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u8></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u16></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u16>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u16></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u32></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u32>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u32></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u64></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u64>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u64></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u128></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u128>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><u128></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><isize></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><isize>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><isize></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i8></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i8>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i8></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i16></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i16>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i16></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i32></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i32>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i32></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i64></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i64>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i64></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/num/wrapping.rs.html#143-148' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i128></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i128>> for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><i128></code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for usize</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a usize> for usize</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for u8</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a u8> for u8</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for u16</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a u16> for u16</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for u32</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a u32> for u32</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for u64</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a u64> for u64</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for u128</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a u128> for u128</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for isize</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a isize> for isize</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for i8</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a i8> for i8</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for i16</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a i16> for i16</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for i32</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a i32> for i32</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for i64</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a i64> for i64</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for i128</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a i128> for i128</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for f32</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a f32> for f32</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/ops/arith.rs.html#676-680' title='goto source code'>[src]</a></div><code>impl AddAssign for f64</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/internal_macros.rs.html#81-86' title='goto source code'>[src]</a></div><code>impl<'a> AddAssign<&'a f64> for f64</code></li>
<li><div class='out-of-band'><a class='srclink' href='../../src/core/time.rs.html#421-425' title='goto source code'>[src]</a></div><code>impl AddAssign for <a class="struct" href="../../core/time/struct.Duration.html" title="struct core::time::Duration">Duration</a></code></li>
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src="../../implementors/core/ops/trait.AddAssign.js">
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<dd>Move up in search results</dd>
<dt><kbd>↓</kbd></dt>
<dd>Move down in search results</dd>
<dt><kbd>↹</kbd></dt>
<dd>Switch tab</dd>
<dt><kbd>⏎</kbd></dt>
<dd>Go to active search result</dd>
<dt><kbd>+</kbd></dt>
<dd>Expand all sections</dd>
<dt><kbd>-</kbd></dt>
<dd>Collapse all sections</dd>
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<div class="infos">
<h2>Search Tricks</h2>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>type</code>, <code>macro</code>,
and <code>const</code>.
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code> or <code>* -> vec</code>)
</p>
</div>
</div>
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