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<!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 `Slab` struct in crate `slab`."><meta name="keywords" content="rust, rustlang, rust-lang, Slab"><title>slab::Slab - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../dark.css"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="shortcut icon" href="../favicon.ico"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[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">&#9776;</div><a href='../slab/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><p class='location'>Struct Slab</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.capacity">capacity</a><a href="#method.clear">clear</a><a href="#method.contains">contains</a><a href="#method.drain">drain</a><a href="#method.get">get</a><a href="#method.get_mut">get_mut</a><a href="#method.get_unchecked">get_unchecked</a><a href="#method.get_unchecked_mut">get_unchecked_mut</a><a href="#method.insert">insert</a><a href="#method.is_empty">is_empty</a><a href="#method.iter">iter</a><a href="#method.iter_mut">iter_mut</a><a href="#method.len">len</a><a href="#method.new">new</a><a href="#method.remove">remove</a><a href="#method.reserve">reserve</a><a href="#method.reserve_exact">reserve_exact</a><a href="#method.retain">retain</a><a href="#method.shrink_to_fit">shrink_to_fit</a><a href="#method.vacant_entry">vacant_entry</a><a href="#method.with_capacity">with_capacity</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-Default">Default</a><a href="#impl-Index%3Cusize%3E">Index&lt;usize&gt;</a><a href="#impl-IndexMut%3Cusize%3E">IndexMut&lt;usize&gt;</a><a href="#impl-IntoIterator">IntoIterator</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow&lt;T&gt;</a><a href="#impl-BorrowMut%3CT%3E">BorrowMut&lt;T&gt;</a><a href="#impl-From%3CT%3E">From&lt;T&gt;</a><a href="#impl-Into%3CU%3E">Into&lt;U&gt;</a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-TryFrom%3CU%3E">TryFrom&lt;U&gt;</a><a href="#impl-TryInto%3CU%3E">TryInto&lt;U&gt;</a></div></div><p class='location'><a href='index.html'>slab</a></p><script>window.sidebarCurrent = {name: 'Slab', ty: 'struct', 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="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../theme.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…" typ
<p>See the <a href="index.html">module documentation</a> for more details.</p>
</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#183-781' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.new' class="method"><code id='new.v'>pub fn <a href='#method.new' class='fnname'>new</a>() -&gt; <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#195-197' title='goto source code'>[src]</a></h4><div class='docblock'><p>Construct a new, empty <code>Slab</code>.</p>
<p>The function does not allocate and the returned slab will have no
capacity until <code>insert</code> is called or capacity is explicitly reserved.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">slab</span>: <span class="ident">Slab</span><span class="op">&lt;</span><span class="ident">i32</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();</pre></div>
</div><h4 id='method.with_capacity' class="method"><code id='with_capacity.v'>pub fn <a href='#method.with_capacity' class='fnname'>with_capacity</a>(capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#226-232' title='goto source code'>[src]</a></h4><div class='docblock'><p>Construct a new, empty <code>Slab</code> with the specified capacity.</p>
<p>The returned slab will be able to store exactly <code>capacity</code> without
reallocating. If <code>capacity</code> is 0, the slab will not allocate.</p>
<p>It is important to note that this function does not specify the <em>length</em>
of the returned slab, but only the capacity. For an explanation of the
difference between length and capacity, see <a href="index.html#capacity-and-reallocation">Capacity and
reallocation</a>.</p>
<h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
<span class="comment">// The slab contains no values, even though it has capacity for more</span>
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">len</span>(), <span class="number">0</span>);
<span class="comment">// These are all done without reallocating...</span>
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">10</span> {
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="ident">i</span>);
}
<span class="comment">// ...but this may make the slab reallocate</span>
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">11</span>);</pre></div>
</div><h4 id='method.capacity' class="method"><code id='capacity.v'>pub fn <a href='#method.capacity' class='fnname'>capacity</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class='srclink' href='../src/slab/lib.rs.html#243-245' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return the number of values the slab can store without reallocating.</p>
<h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">slab</span>: <span class="ident">Slab</span><span class="op">&lt;</span><span class="ident">i32</span><span class="op">&gt;</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>(), <span class="number">10</span>);</pre></div>
</div><h4 id='method.reserve' class="method"><code id='reserve.v'>pub fn <a href='#method.reserve' class='fnname'>reserve</a>(&amp;mut self, additional: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code><a class='srclink' href='../src/slab/lib.rs.html#273-279' title='goto source code'>[src]</a></h4><div class='docblock'><p>Reserve capacity for at least <code>additional</code> more values to be stored
without allocating.</p>
<p><code>reserve</code> does nothing if the slab already has sufficient capacity for
<code>additional</code> more values. If more capacity is required, a new segment of
memory will be allocated and all existing values will be copied into it.
As such, if the slab is already very large, a call to <code>reserve</code> can end
up being expensive.</p>
<p>The slab may reserve more than <code>additional</code> extra space in order to
avoid frequent reallocations. Use <code>reserve_exact</code> instead to guarantee
that only the requested space is allocated.</p>
<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
<p>Panics if the new capacity overflows <code>usize</code>.</p>
<h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="ident">slab</span>.<span class="ident">reserve</span>(<span class="number">10</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>() <span class="op">&gt;</span><span class="op">=</span> <span class="number">11</span>);</pre></div>
</div><h4 id='method.reserve_exact' class="method"><code id='reserve_exact.v'>pub fn <a href='#method.reserve_exact' class='fnname'>reserve_exact</a>(&amp;mut self, additional: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code><a class='srclink' href='../src/slab/lib.rs.html#307-313' title='goto source code'>[src]</a></h4><div class='docblock'><p>Reserve the minimum capacity required to store exactly <code>additional</code>
more values.</p>
<p><code>reserve_exact</code> does nothing if the slab already has sufficient capacity
for <code>additional</code> more valus. If more capacity is required, a new segment
of memory will be allocated and all existing values will be copied into
it. As such, if the slab is already very large, a call to <code>reserve</code> can
end up being expensive.</p>
<p>Note that the allocator may give the slab more space than it requests.
Therefore capacity can not be relied upon to be precisely minimal.
Prefer <code>reserve</code> if future insertions are expected.</p>
<h1 id="panics-1" class="section-header"><a href="#panics-1">Panics</a></h1>
<p>Panics if the new capacity overflows <code>usize</code>.</p>
<h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="ident">slab</span>.<span class="ident">reserve_exact</span>(<span class="number">10</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>() <span class="op">&gt;</span><span class="op">=</span> <span class="number">11</span>);</pre></div>
</div><h4 id='method.shrink_to_fit' class="method"><code id='shrink_to_fit.v'>pub fn <a href='#method.shrink_to_fit' class='fnname'>shrink_to_fit</a>(&amp;mut self)</code><a class='srclink' href='../src/slab/lib.rs.html#355-357' title='goto source code'>[src]</a></h4><div class='docblock'><p>Shrink the capacity of the slab as much as possible.</p>
<p>It will drop down as close as possible to the length but the allocator
may still inform the vector that there is space for a few more elements.
Also, since values are not moved, the slab cannot shrink past any stored
values.</p>
<h1 id="examples-5" class="section-header"><a href="#examples-5">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">3</span> {
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="ident">i</span>);
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>(), <span class="number">10</span>);
<span class="ident">slab</span>.<span class="ident">shrink_to_fit</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>() <span class="op">&gt;</span><span class="op">=</span> <span class="number">3</span>);</pre></div>
<p>In this case, even though two values are removed, the slab cannot shrink
past the last value.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">10</span>);
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">3</span> {
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="ident">i</span>);
}
<span class="ident">slab</span>.<span class="ident">remove</span>(<span class="number">0</span>);
<span class="ident">slab</span>.<span class="ident">remove</span>(<span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>(), <span class="number">10</span>);
<span class="ident">slab</span>.<span class="ident">shrink_to_fit</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">capacity</span>() <span class="op">&gt;</span><span class="op">=</span> <span class="number">3</span>);</pre></div>
</div><h4 id='method.clear' class="method"><code id='clear.v'>pub fn <a href='#method.clear' class='fnname'>clear</a>(&amp;mut self)</code><a class='srclink' href='../src/slab/lib.rs.html#374-378' title='goto source code'>[src]</a></h4><div class='docblock'><p>Clear the slab of all values.</p>
<h1 id="examples-6" class="section-header"><a href="#examples-6">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">3</span> {
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="ident">i</span>);
}
<span class="ident">slab</span>.<span class="ident">clear</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">is_empty</span>());</pre></div>
</div><h4 id='method.len' class="method"><code id='len.v'>pub fn <a href='#method.len' class='fnname'>len</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class='srclink' href='../src/slab/lib.rs.html#394-396' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return the number of stored values.</p>
<h1 id="examples-7" class="section-header"><a href="#examples-7">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">3</span> {
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="ident">i</span>);
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">3</span>, <span class="ident">slab</span>.<span class="ident">len</span>());</pre></div>
</div><h4 id='method.is_empty' class="method"><code id='is_empty.v'>pub fn <a href='#method.is_empty' class='fnname'>is_empty</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../src/slab/lib.rs.html#410-412' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return <code>true</code> if there are no values stored in the slab.</p>
<h1 id="examples-8" class="section-header"><a href="#examples-8">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">is_empty</span>());
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">1</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">slab</span>.<span class="ident">is_empty</span>());</pre></div>
</div><h4 id='method.iter' class="method"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</h3><code class="content"><span class="where fmt-newline">impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a </a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>;</span></code></div></div><code id='iter.v'>pub fn <a href='#method.iter' class='fnname'>iter</a>(&amp;self) -&gt; <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#438-443' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return an iterator over the slab.</p>
<p>This function should generally be <strong>avoided</strong> as it is not efficient.
Iterators must iterate over every slot in the slab even if it is
vacant. As such, a slab with a capacity of 1 million but only one
stored value must still iterate the million slots.</p>
<h1 id="examples-9" class="section-header"><a href="#examples-9">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="number">3</span> {
<span class="ident">slab</span>.<span class="ident">insert</span>(<span class="ident">i</span>);
}
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">iter</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">iterator</span>.<span class="ident">next</span>(), <span class="prelude-val">Some</span>((<span class="number">0</span>, <span class="kw-2">&amp;</span><span class="number">0</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">iterator</span>.<span class="ident">next</span>(), <span class="prelude-val">Some</span>((<span class="number">1</span>, <span class="kw-2">&amp;</span><span class="number">1</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">iterator</span>.<span class="ident">next</span>(), <span class="prelude-val">Some</span>((<span class="number">2</span>, <span class="kw-2">&amp;</span><span class="number">2</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">iterator</span>.<span class="ident">next</span>(), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.iter_mut' class="method"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</h3><code class="content"><span class="where fmt-newline">impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a mut </a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>;</span></code></div></div><code id='iter_mut.v'>pub fn <a href='#method.iter_mut' class='fnname'>iter_mut</a>(&amp;mut self) -&gt; <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#470-475' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return an iterator that allows modifying each value.</p>
<p>This function should generally be <strong>avoided</strong> as it is not efficient.
Iterators must iterate over every slot in the slab even if it is
vacant. As such, a slab with a capacity of 1 million but only one
stored value must still iterate the million slots.</p>
<h1 id="examples-10" class="section-header"><a href="#examples-10">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">key1</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">0</span>);
<span class="kw">let</span> <span class="ident">key2</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">1</span>);
<span class="kw">for</span> (<span class="ident">key</span>, <span class="ident">val</span>) <span class="kw">in</span> <span class="ident">slab</span>.<span class="ident">iter_mut</span>() {
<span class="kw">if</span> <span class="ident">key</span> <span class="op">=</span><span class="op">=</span> <span class="ident">key1</span> {
<span class="kw-2">*</span><span class="ident">val</span> <span class="op">+</span><span class="op">=</span> <span class="number">2</span>;
}
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>[<span class="ident">key1</span>], <span class="number">2</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>[<span class="ident">key2</span>], <span class="number">1</span>);</pre></div>
</div><h4 id='method.get' class="method"><code id='get.v'>pub fn <a href='#method.get' class='fnname'>get</a>(&amp;self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#492-497' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return a reference to the value associated with the given key.</p>
<p>If the given key is not associated with a value, then <code>None</code> is
returned.</p>
<h1 id="examples-11" class="section-header"><a href="#examples-11">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">get</span>(<span class="ident">key</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">&quot;hello&quot;</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">get</span>(<span class="number">123</span>), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.get_mut' class="method"><code id='get_mut.v'>pub fn <a href='#method.get_mut' class='fnname'>get_mut</a>(&amp;mut self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#516-521' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return a mutable reference to the value associated with the given key.</p>
<p>If the given key is not associated with a value, then <code>None</code> is
returned.</p>
<h1 id="examples-12" class="section-header"><a href="#examples-12">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="kw-2">*</span><span class="ident">slab</span>.<span class="ident">get_mut</span>(<span class="ident">key</span>).<span class="ident">unwrap</span>() <span class="op">=</span> <span class="string">&quot;world&quot;</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>[<span class="ident">key</span>], <span class="string">&quot;world&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">get_mut</span>(<span class="number">123</span>), <span class="prelude-val">None</span>);</pre></div>
</div><h4 id='method.get_unchecked' class="method"><code id='get_unchecked.v'>pub unsafe fn <a href='#method.get_unchecked' class='fnname'>get_unchecked</a>(&amp;self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='../src/slab/lib.rs.html#539-544' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return a reference to the value associated with the given key without
performing bounds checking.</p>
<p>This function should be used with care.</p>
<h1 id="examples-13" class="section-header"><a href="#examples-13">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">2</span>);
<span class="kw">unsafe</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">get_unchecked</span>(<span class="ident">key</span>), <span class="kw-2">&amp;</span><span class="number">2</span>);
}</pre></div>
</div><h4 id='method.get_unchecked_mut' class="method"><code id='get_unchecked_mut.v'>pub unsafe fn <a href='#method.get_unchecked_mut' class='fnname'>get_unchecked_mut</a>(&amp;mut self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='../src/slab/lib.rs.html#565-570' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return a mutable reference to the value associated with the given key
without performing bounds checking.</p>
<p>This function should be used with care.</p>
<h1 id="examples-14" class="section-header"><a href="#examples-14">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">2</span>);
<span class="kw">unsafe</span> {
<span class="kw">let</span> <span class="ident">val</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">get_unchecked_mut</span>(<span class="ident">key</span>);
<span class="kw-2">*</span><span class="ident">val</span> <span class="op">=</span> <span class="number">13</span>;
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>[<span class="ident">key</span>], <span class="number">13</span>);</pre></div>
</div><h4 id='method.insert' class="method"><code id='insert.v'>pub fn <a href='#method.insert' class='fnname'>insert</a>(&amp;mut self, val: T) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class='srclink' href='../src/slab/lib.rs.html#590-596' title='goto source code'>[src]</a></h4><div class='docblock'><p>Insert a value in the slab, returning key assigned to the value.</p>
<p>The returned key can later be used to retrieve or remove the value using indexed
lookup and <code>remove</code>. Additional capacity is allocated if needed. See
<a href="index.html#capacity-and-reallocation">Capacity and reallocation</a>.</p>
<h1 id="panics-2" class="section-header"><a href="#panics-2">Panics</a></h1>
<p>Panics if the number of elements in the vector overflows a <code>usize</code>.</p>
<h1 id="examples-15" class="section-header"><a href="#examples-15">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>[<span class="ident">key</span>], <span class="string">&quot;hello&quot;</span>);</pre></div>
</div><h4 id='method.vacant_entry' class="method"><code id='vacant_entry.v'>pub fn <a href='#method.vacant_entry' class='fnname'>vacant_entry</a>(&amp;mut self) -&gt; <a class="struct" href="../slab/struct.VacantEntry.html" title="struct slab::VacantEntry">VacantEntry</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#621-626' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return a handle to a vacant entry allowing for further manipulation.</p>
<p>This function is useful when creating values that must contain their
slab key. The returned <code>VacantEntry</code> reserves a slot in the slab and is
able to query the associated key.</p>
<h1 id="examples-16" class="section-header"><a href="#examples-16">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">hello</span> <span class="op">=</span> {
<span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">vacant_entry</span>();
<span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">key</span>();
<span class="ident">entry</span>.<span class="ident">insert</span>((<span class="ident">key</span>, <span class="string">&quot;hello&quot;</span>));
<span class="ident">key</span>
};
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">hello</span>, <span class="ident">slab</span>[<span class="ident">hello</span>].<span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">&quot;hello&quot;</span>, <span class="ident">slab</span>[<span class="ident">hello</span>].<span class="number">1</span>);</pre></div>
</div><h4 id='method.remove' class="method"><code id='remove.v'>pub fn <a href='#method.remove' class='fnname'>remove</a>(&amp;mut self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; T</code><a class='srclink' href='../src/slab/lib.rs.html#666-682' title='goto source code'>[src]</a></h4><div class='docblock'><p>Remove and return the value associated with the given key.</p>
<p>The key is then released and may be associated with future stored
values.</p>
<h1 id="panics-3" class="section-header"><a href="#panics-3">Panics</a></h1>
<p>Panics if <code>key</code> is not associated with a value.</p>
<h1 id="examples-17" class="section-header"><a href="#examples-17">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">hello</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">remove</span>(<span class="ident">hello</span>), <span class="string">&quot;hello&quot;</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">slab</span>.<span class="ident">contains</span>(<span class="ident">hello</span>));</pre></div>
</div><h4 id='method.contains' class="method"><code id='contains.v'>pub fn <a href='#method.contains' class='fnname'>contains</a>(&amp;self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../src/slab/lib.rs.html#699-707' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return <code>true</code> if a value is associated with the given key.</p>
<h1 id="examples-18" class="section-header"><a href="#examples-18">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">hello</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="string">&quot;hello&quot;</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">contains</span>(<span class="ident">hello</span>));
<span class="ident">slab</span>.<span class="ident">remove</span>(<span class="ident">hello</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">slab</span>.<span class="ident">contains</span>(<span class="ident">hello</span>));</pre></div>
</div><h4 id='method.retain' class="method"><code id='retain.v'>pub fn <a href='#method.retain' class='fnname'>retain</a>&lt;F&gt;(&amp;mut self, f: F) <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,&nbsp;</span></code><a class='srclink' href='../src/slab/lib.rs.html#733-747' title='goto source code'>[src]</a></h4><div class='docblock'><p>Retain only the elements specified by the predicate.</p>
<p>In other words, remove all elements <code>e</code> such that <code>f(usize, &amp;mut e)</code>
returns false. This method operates in place and preserves the key
associated with the retained values.</p>
<h1 id="examples-19" class="section-header"><a href="#examples-19">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">k1</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">0</span>);
<span class="kw">let</span> <span class="ident">k2</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">1</span>);
<span class="kw">let</span> <span class="ident">k3</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">2</span>);
<span class="ident">slab</span>.<span class="ident">retain</span>(<span class="op">|</span><span class="ident">key</span>, <span class="ident">val</span><span class="op">|</span> <span class="ident">key</span> <span class="op">=</span><span class="op">=</span> <span class="ident">k1</span> <span class="op">|</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">val</span> <span class="op">=</span><span class="op">=</span> <span class="number">1</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">contains</span>(<span class="ident">k1</span>));
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">contains</span>(<span class="ident">k2</span>));
<span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="ident">slab</span>.<span class="ident">contains</span>(<span class="ident">k3</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2</span>, <span class="ident">slab</span>.<span class="ident">len</span>());</pre></div>
</div><h4 id='method.drain' class="method"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../slab/struct.Drain.html" title="struct slab::Drain">Drain</a>&lt;'a, T&gt;</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../slab/struct.Drain.html" title="struct slab::Drain">Drain</a>&lt;'a, T&gt;</h3><code class="content"><span class="where fmt-newline">impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="../slab/struct.Drain.html" title="struct slab::Drain">Drain</a>&lt;'a, T&gt;</span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = T;</span></code></div></div><code id='drain.v'>pub fn <a href='#method.drain' class='fnname'>drain</a>(&amp;mut self) -&gt; <a class="struct" href="../slab/struct.Drain.html" title="struct slab::Drain">Drain</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#776-780' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return a draining iterator that removes all elements from the slab and
yields the removed items.</p>
<p>Note: Elements are removed even if the iterator is only partially
consumed or not consumed at all.</p>
<h1 id="examples-20" class="section-header"><a href="#examples-20">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slab</span> <span class="op">=</span> <span class="ident">Slab</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">0</span>);
<span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">1</span>);
<span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">insert</span>(<span class="number">2</span>);
{
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">drain</span> <span class="op">=</span> <span class="ident">slab</span>.<span class="ident">drain</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), <span class="ident">drain</span>.<span class="ident">next</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), <span class="ident">drain</span>.<span class="ident">next</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), <span class="ident">drain</span>.<span class="ident">next</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="ident">drain</span>.<span class="ident">next</span>());
}
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">slab</span>.<span class="ident">is_empty</span>());</pre></div>
</div></div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-Default' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl-Default' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#128-132' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.default' class="method hidden"><code id='default.v'>fn <a href='https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -&gt; Self</code><a class='srclink' href='../src/slab/lib.rs.html#129-131' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns the &quot;default value&quot; for a type. <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default">Read more</a></p>
</div></div><h3 id='impl-Clone' class='impl'><code class='in-band'>impl&lt;T:&nbsp;<a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#115' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method hidden"><code id='clone.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#115' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method hidden"><code id='clone_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-IntoIterator' class='impl'><code class='in-band'>impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a> for &amp;'a <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl-IntoIterator' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#803-810' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Item' class="type"><code id='Item.t'>type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a </a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code></h4><div class='docblock'><p>The type of the elements being iterated over.</p>
</div><h4 id='associatedtype.IntoIter' class="type"><code id='IntoIter.t'>type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.IntoIter' class="type">IntoIter</a> = <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</code></h4><div class='docblock'><p>Which kind of iterator are we turning this into?</p>
</div><h4 id='method.into_iter' class="method hidden"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</h3><code class="content"><span class="where fmt-newline">impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a </a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>;</span></code></div></div><code id='into_iter.v'>fn <a href='https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter' class='fnname'>into_iter</a>(self) -&gt; <a class="struct" href="../slab/struct.Iter.html" title="struct slab::Iter">Iter</a>&lt;'a, T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#807-809' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates an iterator from a value. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter">Read more</a></p>
</div></div><h3 id='impl-IntoIterator-1' class='impl'><code class='in-band'>impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a> for &amp;'a mut <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl-IntoIterator-1' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#812-819' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Item-1' class="type"><code id='Item.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a mut </a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code></h4><div class='docblock'><p>The type of the elements being iterated over.</p>
</div><h4 id='associatedtype.IntoIter-1' class="type"><code id='IntoIter.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.IntoIter' class="type">IntoIter</a> = <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</code></h4><div class='docblock'><p>Which kind of iterator are we turning this into?</p>
</div><h4 id='method.into_iter-1' class="method hidden"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</h3><code class="content"><span class="where fmt-newline">impl&lt;'a, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a mut </a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>;</span></code></div></div><code id='into_iter.v-1'>fn <a href='https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter' class='fnname'>into_iter</a>(self) -&gt; <a class="struct" href="../slab/struct.IterMut.html" title="struct slab::IterMut">IterMut</a>&lt;'a, T&gt;</code><a class='srclink' href='../src/slab/lib.rs.html#816-818' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates an iterator from a value. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter">Read more</a></p>
</div></div><h3 id='impl-Index%3Cusize%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html" title="trait core::ops::index::Index">Index</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt; for <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl-Index%3Cusize%3E' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#783-792' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Output' class="type"><code id='Output.t'>type <a href='https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#associatedtype.Output' class="type">Output</a> = T</code></h4><div class='docblock'><p>The returned type after indexing.</p>
</div><h4 id='method.index' class="method hidden"><code id='index.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/index/trait.Index.html#tymethod.index' class='fnname'>index</a>(&amp;self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='../src/slab/lib.rs.html#786-791' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the indexing (<code>container[index]</code>) operation.</p>
</div></div><h3 id='impl-IndexMut%3Cusize%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html" title="trait core::ops::index::IndexMut">IndexMut</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt; for <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt;</code><a href='#impl-IndexMut%3Cusize%3E' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#794-801' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.index_mut' class="method hidden"><code id='index_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/index/trait.IndexMut.html#tymethod.index_mut' class='fnname'>index_mut</a>(&amp;mut self, key: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='../src/slab/lib.rs.html#795-800' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the mutable indexing (<code>container[index]</code>) operation.</p>
</div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl&lt;T&gt; <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="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>,&nbsp;</span></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../src/slab/lib.rs.html#821-833' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, fmt: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../src/slab/lib.rs.html#825-832' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>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></p>
</div></div></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'><h3 id='impl-Send' class='impl'><code class='in-band'>impl&lt;T&gt; <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="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>,&nbsp;</span></code><a href='#impl-Send' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Unpin' class='impl'><code class='in-band'>impl&lt;T&gt; <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="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,&nbsp;</span></code><a href='#impl-Unpin' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl&lt;T&gt; <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="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>,&nbsp;</span></code><a href='#impl-Sync' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-UnwindSafe' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a>,&nbsp;</span></code><a href='#impl-UnwindSafe' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-RefUnwindSafe' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../slab/struct.Slab.html" title="struct slab::Slab">Slab</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a>,&nbsp;</span></code><a href='#impl-RefUnwindSafe' class='anchor'></a></h3><div class='impl-items'></div></div><h2 id='blanket-implementations' class='small-section-header'>Blanket Implementations<a href='#blanket-implementations' class='anchor'></a></h2><div id='blanket-implementations-list'><h3 id='impl-ToOwned' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,&nbsp;</span></code><a href='#impl-ToOwned' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#81-92' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Owned'
</div><h4 id='method.to_owned' class="method hidden"><code id='to_owned.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned' class='fnname'>to_owned</a>(&amp;self) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#85-87' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div><h4 id='method.clone_into' class="method hidden"><code id='clone_into.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into' class='fnname'>clone_into</a>(&amp;self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#89-91' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</summary><p>recently added</p>
</details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></div><h3 id='impl-Into%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-Into%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#544-549' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -&gt; U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#546-548' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-From%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</code><a href='#impl-From%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#553-555' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#554' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryFrom%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryFrom%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#572-578' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#575-577' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryInto%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryInto%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#560-567' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#564-566' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-BorrowMut%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-BorrowMut%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-220' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>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></p>
</div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Borrow%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-215' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id='impl-Any' class='impl'><code class='in-band'>impl&lt;T&gt; <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>&nbsp;&nbsp;&nbsp;&nbsp;T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#100-102' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#101' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>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></p>
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