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<p class='location'>Trait Hash</p><div class="block items"><ul><li><a href="#required-methods">Required Methods</a></li><li><a href="#provided-methods">Provided Methods</a></li><li><a href="#implementors">Implementors</a></li></ul></div><p class='location'><a href='../index.html'>core</a>::<wbr><a href='index.html'>hash</a></p><script>window.sidebarCurrent = {name: 'Hash', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>core</a>::<wbr><a href='index.html'>hash</a>::<wbr><a class="trait" href=''>Hash</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>−</span>]
</a>
</span><a class='srclink' href='../../src/core/hash/mod.rs.html#168-209' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait Hash {
fn <a href='#tymethod.hash' class='fnname'>hash</a><H: <a class="trait" href="../../core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(&self, state: &mut H);
fn <a href='#method.hash_slice' class='fnname'>hash_slice</a><H: <a class="trait" href="../../core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(data: &[Self], state: &mut H)<br> <span class="where">where<br> Self: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a></span>,
{ ... }
}</pre><div class='docblock'><p>A hashable type.</p>
<p>Types implementing <code>Hash</code> are able to be <a href="#tymethod.hash"><code>hash</code></a>ed with an instance of
<a href="trait.Hasher.html"><code>Hasher</code></a>.</p>
<h2 id='implementing-hash' class='section-header'><a href='#implementing-hash'>Implementing <code>Hash</code></a></h2>
<p>You can derive <code>Hash</code> with <code>#[derive(Hash)]</code> if all fields implement <code>Hash</code>.
The resulting hash will be the combination of the values from calling
<a href="#tymethod.hash"><code>hash</code></a> on each field.</p>
<pre class="rust rust-example-rendered">
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Hash</span>)]</span>
<span class="kw">struct</span> <span class="ident">Rustacean</span> {
<span class="ident">name</span>: <span class="ident">String</span>,
<span class="ident">country</span>: <span class="ident">String</span>,
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0A%23%5Bderive(Hash)%5D%0Astruct%20Rustacean%20%7B%0A%20%20%20%20name%3A%20String%2C%0A%20%20%20%20country%3A%20String%2C%0A%7D%0A%7D">Run</a></pre>
<p>If you need more control over how a value is hashed, you can of course
implement the <code>Hash</code> trait yourself:</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">hash</span>::{<span class="ident">Hash</span>, <span class="ident">Hasher</span>};
<span class="kw">struct</span> <span class="ident">Person</span> {
<span class="ident">id</span>: <span class="ident">u32</span>,
<span class="ident">name</span>: <span class="ident">String</span>,
<span class="ident">phone</span>: <span class="ident">u64</span>,
}
<span class="kw">impl</span> <span class="ident">Hash</span> <span class="kw">for</span> <span class="ident">Person</span> {
<span class="kw">fn</span> <span class="ident">hash</span><span class="op"><</span><span class="ident">H</span>: <span class="ident">Hasher</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">state</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">H</span>) {
<span class="self">self</span>.<span class="ident">id</span>.<span class="ident">hash</span>(<span class="ident">state</span>);
<span class="self">self</span>.<span class="ident">phone</span>.<span class="ident">hash</span>(<span class="ident">state</span>);
}
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0Ause%20std%3A%3Ahash%3A%3A%7BHash%2C%20Hasher%7D%3B%0A%0Astruct%20Person%20%7B%0A%20%20%20%20id%3A%20u32%2C%0A%20%20%20%20name%3A%20String%2C%0A%20%20%20%20phone%3A%20u64%2C%0A%7D%0A%0Aimpl%20Hash%20for%20Person%20%7B%0A%20%20%20%20fn%20hash%3CH%3A%20Hasher%3E(%26self%2C%20state%3A%20%26mut%20H)%20%7B%0A%20%20%20%20%20%20%20%20self.id.hash(state)%3B%0A%20%20%20%20%20%20%20%20self.phone.hash(state)%3B%0A%20%20%20%20%7D%0A%7D%0A%7D">Run</a></pre>
<h2 id='hash-and-eq' class='section-header'><a href='#hash-and-eq'><code>Hash</code> and <code>Eq</code></a></h2>
<p>When implementing both <code>Hash</code> and <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a>, it is important that the following
property holds:</p>
<pre><code class="language-text">k1 == k2 -> hash(k1) == hash(k2)
</code></pre>
<p>In other words, if two keys are equal, their hashes must also be equal.
<a href="../../std/collections/struct.HashMap.html"><code>HashMap</code></a> and <a href="../../std/collections/struct.HashSet.html"><code>HashSet</code></a> both rely on this behavior.</p>
<p>Thankfully, you won't need to worry about upholding this property when
deriving both <a href="../../std/cmp/trait.Eq.html"><code>Eq</code></a> and <code>Hash</code> with <code>#[derive(PartialEq, Eq, Hash)]</code>.</p>
</div>
<h2 id='required-methods'>Required Methods</h2>
<div class='methods'>
<h3 id='tymethod.hash' class='method'><span id='hash.v' class='invisible'><code>fn <a href='#tymethod.hash' class='fnname'>hash</a><H: <a class="trait" href="../../core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(&self, state: &mut H)</code></span></h3><div class='docblock'><p>Feeds this value into the given <a href="trait.Hasher.html"><code>Hasher</code></a>.</p>
<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">hash_map</span>::<span class="ident">DefaultHasher</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">hash</span>::{<span class="ident">Hash</span>, <span class="ident">Hasher</span>};
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">hasher</span> <span class="op">=</span> <span class="ident">DefaultHasher</span>::<span class="ident">new</span>();
<span class="number">7920</span>.<span class="ident">hash</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">hasher</span>);
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"Hash is {:x}!"</span>, <span class="ident">hasher</span>.<span class="ident">finish</span>());<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0Ause%20std%3A%3Acollections%3A%3Ahash_map%3A%3ADefaultHasher%3B%0Ause%20std%3A%3Ahash%3A%3A%7BHash%2C%20Hasher%7D%3B%0A%0Alet%20mut%20hasher%20%3D%20DefaultHasher%3A%3Anew()%3B%0A7920.hash(%26mut%20hasher)%3B%0Aprintln!(%22Hash%20is%20%7B%3Ax%7D!%22%2C%20hasher.finish())%3B%0A%7D">Run</a></pre>
</div></div>
<h2 id='provided-methods'>Provided Methods</h2>
<div class='methods'>
<h3 id='method.hash_slice' class='method'><span id='hash_slice.v' class='invisible'><code>fn <a href='#method.hash_slice' class='fnname'>hash_slice</a><H: <a class="trait" href="../../core/hash/trait.Hasher.html" title="trait core::hash::Hasher">Hasher</a>>(data: &[Self], state: &mut H) <span class="where fmt-newline">where<br> Self: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><div class='since' title='Stable since Rust version 1.3.0'>1.3.0</div></span></h3><div class='docblock'><p>Feeds a slice of this type into the given <a href="trait.Hasher.html"><code>Hasher</code></a>.</p>
<h1 id='examples-1' class='section-header'><a href='#examples-1'>Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">hash_map</span>::<span class="ident">DefaultHasher</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">hash</span>::{<span class="ident">Hash</span>, <span class="ident">Hasher</span>};
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">hasher</span> <span class="op">=</span> <span class="ident">DefaultHasher</span>::<span class="ident">new</span>();
<span class="kw">let</span> <span class="ident">numbers</span> <span class="op">=</span> [<span class="number">6</span>, <span class="number">28</span>, <span class="number">496</span>, <span class="number">8128</span>];
<span class="ident">Hash</span>::<span class="ident">hash_slice</span>(<span class="kw-2">&</span><span class="ident">numbers</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">hasher</span>);
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"Hash is {:x}!"</span>, <span class="ident">hasher</span>.<span class="ident">finish</span>());<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0Ause%20std%3A%3Acollections%3A%3Ahash_map%3A%3ADefaultHasher%3B%0Ause%20std%3A%3Ahash%3A%3A%7BHash%2C%20Hasher%7D%3B%0A%0Alet%20mut%20hasher%20%3D%20DefaultHasher%3A%3Anew()%3B%0Alet%20numbers%20%3D%20%5B6%2C%2028%2C%20496%2C%208128%5D%3B%0AHash%3A%3Ahash_slice(%26numbers%2C%20%26mut%20hasher)%3B%0Aprintln!(%22Hash%20is%20%7B%3Ax%7D!%22%2C%20hasher.finish())%3B%0A%7D">Run</a></pre>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T></code></li>
<li><code>impl<T> Hash for <a class="struct" href="../../core/mem/struct.Discriminant.html" title="struct core::mem::Discriminant">Discriminant</a><T></code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a> + <a class="trait" href="../../core/nonzero/trait.Zeroable.html" title="trait core::nonzero::Zeroable">Zeroable</a>> Hash for <a class="struct" href="../../core/nonzero/struct.NonZero.html" title="struct core::nonzero::NonZero">NonZero</a><T></code></li>
<li><code>impl<Ret> Hash for fn() -> Ret</code></li>
<li><code>impl<Ret> Hash for extern "C" fn() -> Ret</code></li>
<li><code>impl<Ret> Hash for unsafe fn() -> Ret</code></li>
<li><code>impl<Ret> Hash for unsafe extern "C" fn() -> Ret</code></li>
<li><code>impl<Ret, A> Hash for fn(_: A) -> Ret</code></li>
<li><code>impl<Ret, A> Hash for extern "C" fn(_: A) -> Ret</code></li>
<li><code>impl<Ret, A> Hash for extern "C" fn(_: A, ...) -> Ret</code></li>
<li><code>impl<Ret, A> Hash for unsafe fn(_: A) -> Ret</code></li>
<li><code>impl<Ret, A> Hash for unsafe extern "C" fn(_: A) -> Ret</code></li>
<li><code>impl<Ret, A> Hash for unsafe extern "C" fn(_: A, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B> Hash for fn(_: A, _: B) -> Ret</code></li>
<li><code>impl<Ret, A, B> Hash for extern "C" fn(_: A, _: B) -> Ret</code></li>
<li><code>impl<Ret, A, B> Hash for extern "C" fn(_: A, _: B, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B> Hash for unsafe fn(_: A, _: B) -> Ret</code></li>
<li><code>impl<Ret, A, B> Hash for unsafe extern "C" fn(_: A, _: B) -> Ret</code></li>
<li><code>impl<Ret, A, B> Hash for unsafe extern "C" fn(_: A, _: B, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C> Hash for fn(_: A, _: B, _: C) -> Ret</code></li>
<li><code>impl<Ret, A, B, C> Hash for extern "C" fn(_: A, _: B, _: C) -> Ret</code></li>
<li><code>impl<Ret, A, B, C> Hash for extern "C" fn(_: A, _: B, _: C, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C> Hash for unsafe fn(_: A, _: B, _: C) -> Ret</code></li>
<li><code>impl<Ret, A, B, C> Hash for unsafe extern "C" fn(_: A, _: B, _: C) -> Ret</code></li>
<li><code>impl<Ret, A, B, C> Hash for unsafe extern "C" fn(_: A, _: B, _: C, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D> Hash for fn(_: A, _: B, _: C, _: D) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D> Hash for extern "C" fn(_: A, _: B, _: C, _: D) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D> Hash for extern "C" fn(_: A, _: B, _: C, _: D, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D> Hash for unsafe fn(_: A, _: B, _: C, _: D) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E> Hash for fn(_: A, _: B, _: C, _: D, _: E) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, _: L) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, _: L) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, _: L, ...) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for unsafe fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, _: L) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, _: L) -> Ret</code></li>
<li><code>impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for unsafe extern "C" fn(_: A, _: B, _: C, _: D, _: E, _: F, _: G, _: H, _: I, _: J, _: K, _: L, ...) -> Ret</code></li>
<li><code>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Hash for <a class="struct" href="../../core/marker/struct.PhantomData.html" title="struct core::marker::PhantomData">PhantomData</a><T></code></li>
<li><code>impl Hash for <a class="struct" href="../../core/ops/struct.RangeFull.html" title="struct core::ops::RangeFull">RangeFull</a></code></li>
<li><code>impl<Idx: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="struct" href="../../core/ops/struct.Range.html" title="struct core::ops::Range">Range</a><Idx></code></li>
<li><code>impl<Idx: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="struct" href="../../core/ops/struct.RangeFrom.html" title="struct core::ops::RangeFrom">RangeFrom</a><Idx></code></li>
<li><code>impl<Idx: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="struct" href="../../core/ops/struct.RangeTo.html" title="struct core::ops::RangeTo">RangeTo</a><Idx></code></li>
<li><code>impl<Idx: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="struct" href="../../core/ops/struct.RangeInclusive.html" title="struct core::ops::RangeInclusive">RangeInclusive</a><Idx></code></li>
<li><code>impl<Idx: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="struct" href="../../core/ops/struct.RangeToInclusive.html" title="struct core::ops::RangeToInclusive">RangeToInclusive</a><Idx></code></li>
<li><code>impl Hash for <a class="enum" href="../../core/cmp/enum.Ordering.html" title="enum core::cmp::Ordering">Ordering</a></code></li>
<li><code>impl Hash for <a class="struct" href="../../core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 0]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 1]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 2]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 3]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 4]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 5]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 6]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 7]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 8]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 9]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 10]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 11]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 12]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 13]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 14]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 15]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 16]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 17]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 18]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 19]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 20]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 21]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 22]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 23]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 24]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 25]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 26]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 27]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 28]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 29]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 30]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 31]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T; 32]</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="enum" href="../../core/option/enum.Option.html" title="enum core::option::Option">Option</a><T></code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for <a class="enum" href="../../core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, E></code></li>
<li><code>impl Hash for u8</code></li>
<li><code>impl Hash for u16</code></li>
<li><code>impl Hash for u32</code></li>
<li><code>impl Hash for u64</code></li>
<li><code>impl Hash for usize</code></li>
<li><code>impl Hash for i8</code></li>
<li><code>impl Hash for i16</code></li>
<li><code>impl Hash for i32</code></li>
<li><code>impl Hash for i64</code></li>
<li><code>impl Hash for isize</code></li>
<li><code>impl Hash for u128</code></li>
<li><code>impl Hash for i128</code></li>
<li><code>impl Hash for bool</code></li>
<li><code>impl Hash for char</code></li>
<li><code>impl Hash for str</code></li>
<li><code>impl Hash for ()</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A,)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, G: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F, G)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, G: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, H: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F, G, H)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, G: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, H: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, I: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F, G, H, I)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, G: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, H: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, I: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, J: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F, G, H, I, J)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, G: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, H: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, I: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, J: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, K: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F, G, H, I, J, K)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, B: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, C: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, D: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, E: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, F: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, G: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, H: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, I: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, J: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, K: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>, L: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for (A, B, C, D, E, F, G, H, I, J, K, L)</code></li>
<li><code>impl<T: <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for [T]</code></li>
<li><code>impl<'a, T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for &'a T</code></li>
<li><code>impl<'a, T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../../core/hash/trait.Hash.html" title="trait core::hash::Hash">Hash</a>> Hash for &'a mut T</code></li>
<li><code>impl<T> Hash for *const T</code></li>
<li><code>impl<T> Hash for *mut T</code></li>
<li><code>impl Hash for <a class="struct" href="../../core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a></code></li>
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