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<p class='location'>Trait One</p><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.one">one</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-One">i8</a><a href="#impl-One">u32</a><a href="#impl-One">usize</a><a href="#impl-One">i16</a><a href="#impl-One">u16</a><a href="#impl-One">isize</a><a href="#impl-One">u8</a><a href="#impl-One">i32</a><a href="#impl-One">f32</a><a href="#impl-One">Wrapping<T></a><a href="#impl-One">u64</a><a href="#impl-One">f64</a><a href="#impl-One">i64</a><a href="#impl-One">Ratio<T></a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='index.html'>num</a></p><script>window.sidebarCurrent = {name: 'One', 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'>num</a>::<wbr><a class="trait" href=''>One</a></span><span class='out-of-band'><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/num_traits/identities.rs.html#65-82' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait One: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html" title="trait core::ops::arith::Mul">Mul</a><Self, Output = Self> {
fn <a href='#tymethod.one' class='fnname'>one</a>() -> Self;
}</pre><div class='docblock'><p>Defines a multiplicative identity element for <code>Self</code>.</p>
</div>
<h2 id='required-methods' class='small-section-header'>
Required Methods<a href='#required-methods' class='anchor'></a>
</h2>
<div class='methods'>
<h3 id='tymethod.one' class='method'><span id='one.v' class='invisible'><code>fn <a href='#tymethod.one' class='fnname'>one</a>() -> Self</code></span></h3><div class='docblock'><p>Returns the multiplicative identity element of <code>Self</code>, <code>1</code>.</p>
<h1 id='laws' class='section-header'><a href='#laws'>Laws</a></h1>
<pre><code class="language-{.text}">a * 1 = a ∀ a ∈ Self
1 * a = a ∀ a ∈ Self
</code></pre>
<h1 id='purity' class='section-header'><a href='#purity'>Purity</a></h1>
<p>This function should return the same result at all times regardless of
external mutable state, for example values stored in TLS or in
<code>static mut</code>s.</p>
</div></div>
<h2 id='foreign-impls' class='small-section-header'>
Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a>
</h2>
<h3 id='impl-One' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></code><a href='#impl-One' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one' class="method"><span id='one.v-1' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-1' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a href='#impl-One-1' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-1' class="method"><span id='one.v-2' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-2' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a href='#impl-One-2' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-2' class="method"><span id='one.v-3' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-3' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></code><a href='#impl-One-3' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-3' class="method"><span id='one.v-4' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-4' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code><a href='#impl-One-4' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-4' class="method"><span id='one.v-5' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-5' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code><a href='#impl-One-5' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-5' class="method"><span id='one.v-6' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-6' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></code><a href='#impl-One-6' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-6' class="method"><span id='one.v-7' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-7' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a href='#impl-One-7' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-7' class="method"><span id='one.v-8' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-8' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></code><a href='#impl-One-8' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-8' class="method"><span id='one.v-9' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-9' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a>,<br> <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html" title="trait core::ops::arith::Mul">Mul</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T>>,<br> <<a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T> as <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html" title="trait core::ops::arith::Mul">Mul</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T>>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Mul.html#associatedtype.Output" title="type core::ops::arith::Mul::Output">Output</a> == <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T>, </span></code><a href='#impl-One-9' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#108-112' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-9' class="method"><span id='one.v-10' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#109-111' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-10' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code><a href='#impl-One-10' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-10' class="method"><span id='one.v-11' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-11' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></code><a href='#impl-One-11' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-11' class="method"><span id='one.v-12' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-12' class='impl'><span class='in-band'><code>impl <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a href='#impl-One-12' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#86-89' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-12' class="method"><span id='one.v-13' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_traits/identities.rs.html#88' title='goto source code'>[src]</a></span></h4>
</div></span><h3 id='impl-One-13' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="../num/trait.One.html" title="trait num::One">One</a> for <a class="struct" href="../num_rational/struct.Ratio.html" title="struct num_rational::Ratio">Ratio</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="../num/trait.Integer.html" title="trait num::Integer">Integer</a>, </span></code><a href='#impl-One-13' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_rational/lib.rs.html#727-732' title='goto source code'>[src]</a></span></h3>
<span class='docblock autohide'><div class='impl-items'><h4 id='method.one-13' class="method"><span id='one.v-14' class='invisible'><code>fn <a href='#method.one' class='fnname'>one</a>() -> <a class="struct" href="../num_rational/struct.Ratio.html" title="struct num_rational::Ratio">Ratio</a><T></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/num_rational/lib.rs.html#729-731' title='goto source code'>[src]</a></span></h4>
</div></span>
<h2 id='implementors' class='small-section-header'>
Implementors<a href='#implementors' class='anchor'></a>
</h2>
<ul class='item-list' id='implementors-list'>
<li><div class='out-of-band'><a class='srclink' href='../src/num_complex/lib.rs.html#837-842' title='goto source code'>[src]</a></div><code>impl<T> One for <a class="struct" href="../num/struct.Complex.html" title="struct num::Complex">Complex</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="../num/trait.Num.html" title="trait num::Num">Num</a>, </span></code></li>
<li><div class='out-of-band'><a class='srclink' href='../src/num_bigint/bigint.rs.html#260-265' title='goto source code'>[src]</a></div><code>impl One for <a class="struct" href="../num/struct.BigInt.html" title="struct num::BigInt">BigInt</a></code></li>
<li><div class='out-of-band'><a class='srclink' href='../src/num_bigint/biguint.rs.html#415-420' title='goto source code'>[src]</a></div><code>impl One for <a class="struct" href="../num/struct.BigUint.html" title="struct num::BigUint">BigUint</a></code></li>
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