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<p class='location'>Struct DefaultHasher</p><div class="block items"><ul><li><a href="#methods">Methods</a></li><li><a href="#implementations">Trait Implementations</a></li></ul></div><p class='location'><a href='../../index.html'>std</a>::<wbr><a href='../index.html'>collections</a>::<wbr><a href='index.html'>hash_map</a></p><script>window.sidebarCurrent = {name: 'DefaultHasher', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../../index.html'>std</a>::<wbr><a href='../index.html'>collections</a>::<wbr><a href='index.html'>hash_map</a>::<wbr><a class="struct" href=''>DefaultHasher</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.13.0'>1.13.0</span><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>−</span>]
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</span><a class='srclink' href='../../../src/std/collections/hash/map.rs.html#2388' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct DefaultHasher(_);</pre><div class='docblock'><p>The default <a href="../../hash/trait.Hasher.html"><code>Hasher</code></a> used by <a href="struct.RandomState.html"><code>RandomState</code></a>.</p>
<p>The internal algorithm is not specified, and so it and its hashes should
not be relied upon over releases.</p>
</div><h2 id='methods'>Methods</h2><h3 class='impl'><span class='in-band'><code>impl <a class="struct" href="../../../std/collections/hash_map/struct.DefaultHasher.html" title="struct std::collections::hash_map::DefaultHasher">DefaultHasher</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/std/collections/hash/map.rs.html#2390-2401' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><code>fn <a href='#method.new' class='fnname'>new</a>() -> <a class="struct" href="../../../std/collections/hash_map/struct.DefaultHasher.html" title="struct std::collections::hash_map::DefaultHasher">DefaultHasher</a></code></span></h4>
<div class='docblock'><p>Creates a new <code>DefaultHasher</code>.</p>
<p>This hasher is not guaranteed to be the same as all other
<code>DefaultHasher</code> instances, but is the same as all other <code>DefaultHasher</code>
instances created through <code>new</code> or <code>default</code>.</p>
</div></div><h2 id='implementations'>Trait Implementations</h2><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="../../../std/fmt/trait.Debug.html" title="trait std::fmt::Debug">Debug</a> for <a class="struct" href="../../../std/collections/hash_map/struct.DefaultHasher.html" title="struct std::collections::hash_map::DefaultHasher">DefaultHasher</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/std/collections/hash/map.rs.html#2387' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='../../../std/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="../../../std/fmt/struct.Formatter.html" title="struct std::fmt::Formatter">Formatter</a>) -> <a class="type" href="../../../std/fmt/type.Result.html" title="type std::fmt::Result">Result</a></code></span></h4>
<div class='docblock'><p>Formats the value using the given formatter.</p>
</div></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="../../../std/default/trait.Default.html" title="trait std::default::Default">Default</a> for <a class="struct" href="../../../std/collections/hash_map/struct.DefaultHasher.html" title="struct std::collections::hash_map::DefaultHasher">DefaultHasher</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/std/collections/hash/map.rs.html#2404-2411' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.default' class="method"><span id='default.v' class='invisible'><code>fn <a href='../../../std/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -> <a class="struct" href="../../../std/collections/hash_map/struct.DefaultHasher.html" title="struct std::collections::hash_map::DefaultHasher">DefaultHasher</a></code></span></h4>
<div class='docblock'><p>Creates a new <code>DefaultHasher</code> using <a href="#method.new"><code>new</code></a>. See its documentation for more.</p>
</div></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="../../../std/hash/trait.Hasher.html" title="trait std::hash::Hasher">Hasher</a> for <a class="struct" href="../../../std/collections/hash_map/struct.DefaultHasher.html" title="struct std::collections::hash_map::DefaultHasher">DefaultHasher</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../../src/std/collections/hash/map.rs.html#2414-2424' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.write' class="method"><span id='write.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#tymethod.write' class='fnname'>write</a>(&mut self, msg: <a class="primitive" href="../../primitive.slice.html">&[</a><a class="primitive" href="../../primitive.u8.html">u8</a><a class="primitive" href="../../primitive.slice.html">]</a>)</code></span></h4>
<div class='docblock'><p>Writes some data into this <code>Hasher</code>. <a href="../../../std/hash/trait.Hasher.html#tymethod.write">Read more</a></p>
</div><h4 id='method.finish' class="method"><span id='finish.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#tymethod.finish' class='fnname'>finish</a>(&self) -> <a class="primitive" href="../../primitive.u64.html">u64</a></code></span></h4>
<div class='docblock'><p>Completes a round of hashing, producing the output hash generated. <a href="../../../std/hash/trait.Hasher.html#tymethod.finish">Read more</a></p>
</div><h4 id='method.write_u8' class="method"><span id='write_u8.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_u8' class='fnname'>write_u8</a>(&mut self, i: <a class="primitive" href="../../primitive.u8.html">u8</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>u8</code> into this hasher.</p>
</div><h4 id='method.write_u16' class="method"><span id='write_u16.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_u16' class='fnname'>write_u16</a>(&mut self, i: <a class="primitive" href="../../primitive.u16.html">u16</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>u16</code> into this hasher.</p>
</div><h4 id='method.write_u32' class="method"><span id='write_u32.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_u32' class='fnname'>write_u32</a>(&mut self, i: <a class="primitive" href="../../primitive.u32.html">u32</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>u32</code> into this hasher.</p>
</div><h4 id='method.write_u64' class="method"><span id='write_u64.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_u64' class='fnname'>write_u64</a>(&mut self, i: <a class="primitive" href="../../primitive.u64.html">u64</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>u64</code> into this hasher.</p>
</div><h4 id='method.write_u128' class="method"><span id='write_u128.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_u128' class='fnname'>write_u128</a>(&mut self, i: <a class="primitive" href="../../primitive.u128.html">u128</a>)</code></span></h4>
<div class='stability'><div class='stab unstable'><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>i128 </code><a href="https://github.com/rust-lang/rust/issues/35118">#35118</a>)</div></div><div class='docblock'><p>Writes a single <code>u128</code> into this hasher.</p>
</div><h4 id='method.write_usize' class="method"><span id='write_usize.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_usize' class='fnname'>write_usize</a>(&mut self, i: <a class="primitive" href="../../primitive.usize.html">usize</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>usize</code> into this hasher.</p>
</div><h4 id='method.write_i8' class="method"><span id='write_i8.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_i8' class='fnname'>write_i8</a>(&mut self, i: <a class="primitive" href="../../primitive.i8.html">i8</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>i8</code> into this hasher.</p>
</div><h4 id='method.write_i16' class="method"><span id='write_i16.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_i16' class='fnname'>write_i16</a>(&mut self, i: <a class="primitive" href="../../primitive.i16.html">i16</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>i16</code> into this hasher.</p>
</div><h4 id='method.write_i32' class="method"><span id='write_i32.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_i32' class='fnname'>write_i32</a>(&mut self, i: <a class="primitive" href="../../primitive.i32.html">i32</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>i32</code> into this hasher.</p>
</div><h4 id='method.write_i64' class="method"><span id='write_i64.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_i64' class='fnname'>write_i64</a>(&mut self, i: <a class="primitive" href="../../primitive.i64.html">i64</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>i64</code> into this hasher.</p>
</div><h4 id='method.write_i128' class="method"><span id='write_i128.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_i128' class='fnname'>write_i128</a>(&mut self, i: <a class="primitive" href="../../primitive.i128.html">i128</a>)</code></span></h4>
<div class='stability'><div class='stab unstable'><span class=microscope>🔬</span> This is a nightly-only experimental API. (<code>i128 </code><a href="https://github.com/rust-lang/rust/issues/35118">#35118</a>)</div></div><div class='docblock'><p>Writes a single <code>i128</code> into this hasher.</p>
</div><h4 id='method.write_isize' class="method"><span id='write_isize.v' class='invisible'><code>fn <a href='../../../std/hash/trait.Hasher.html#method.write_isize' class='fnname'>write_isize</a>(&mut self, i: <a class="primitive" href="../../primitive.isize.html">isize</a>)</code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h4>
<div class='docblock'><p>Writes a single <code>isize</code> into this hasher.</p>
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