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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="Defines a multiplicative identity element for `Self`."><title>One in num_traits::identities - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="num_traits" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">One</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../num_traits/index.html">num_<wbr>traits</a><span class="version">0.2.19</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">One</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#laws" title="Laws">Laws</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.one" title="one">one</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.is_one" title="is_one">is_one</a></li><li><a href="#method.set_one" title="set_one">set_one</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-One-for-Wrapping%3CT%3E" title="Wrapping&#60;T&#62;">Wrapping&#60;T&#62;</a></li><li><a href="#impl-One-for-f32" title="f32">f32</a></li><li><a href="#impl-One-for-f64" title="f64">f64</a></li><li><a href="#impl-One-for-i8" title="i8">i8</a></li><li><a href="#impl-One-for-i16" title="i16">i16</a></li><li><a href="#impl-One-for-i32" title="i32">i32</a></li><li><a href="#impl-One-for-i64" title="i64">i64</a></li><li><a href="#impl-One-for-i128" title="i128">i128</a></li><li><a href="#impl-One-for-isize" title="isize">isize</a></li><li><a href="#impl-One-for-u8" title="u8">u8</a></li><li><a href="#impl-One-for-u16" title="u16">u16</a></li><li><a href="#impl-One-for-u32" title="u32">u32</a></li><li><a href="#impl-One-for-u64" title="u64">u64</a></li><li><a href="#impl-One-for-u128" title="u128">u128</a></li><li><a href="#impl-One-for-usize" title="usize">usize</a></li></ul><h3><a href="#dyn-compatibility">Dyn Compatibility</a></h3><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In num_<wbr>traits::<wbr>identities</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../index.html">num_traits</a>::<wbr><a href="index.html">identities</a></div><h1>Trait <span class="trait">One</span>&nbsp;<button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/num_traits/identities.rs.html#106-134">Source</a> </span></div><pre class="rust item-decl"><code>pub trait One: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/ops/arith/trait.Mul.html" title="trait core::ops::arith::Mul">Mul</a>&lt;Self, Output = Self&gt; {
// Required method
fn <a href="#tymethod.one" class="fn">one</a>() -&gt; Self;
// Provided methods
fn <a href="#method.set_one" class="fn">set_one</a>(&amp;mut self) { ... }
<span class="item-spacer"></span> fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a>
<span class="where">where Self: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a></span> { ... }
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Defines a multiplicative identity element for <code>Self</code>.</p>
<h2 id="laws"><a class="doc-anchor" href="#laws">§</a>Laws</h2><div class="example-wrap"><pre class="language-text"><code>a * 1 = a ∀ a ∈ Self
1 * a = a ∀ a ∈ Self</code></pre></div></div></details><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.one" class="method"><a class="src rightside" href="../../src/num_traits/identities.rs.html#115">Source</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; Self</h4></section></summary><div class="docblock"><p>Returns the multiplicative identity element of <code>Self</code>, <code>1</code>.</p>
<h5 id="purity"><a class="doc-anchor" href="#purity">§</a>Purity</h5>
<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></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.set_one" class="method"><a class="src rightside" href="../../src/num_traits/identities.rs.html#118-120">Source</a><h4 class="code-header">fn <a href="#method.set_one" class="fn">set_one</a>(&amp;mut self)</h4></section></summary><div class="docblock"><p>Sets <code>self</code> to the multiplicative identity element of <code>Self</code>, <code>1</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_one" class="method"><a class="src rightside" href="../../src/num_traits/identities.rs.html#128-133">Source</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a><div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a>,</div></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if <code>self</code> is equal to the multiplicative identity.</p>
<p>For performance reasons, its best to implement this manually.
After a semver bump, this method will be required, and the
<code>where Self: PartialEq</code> bound will be removed.</p>
</div></details></div><h2 id="dyn-compatibility" class="section-header">Dyn Compatibility<a href="#dyn-compatibility" class="anchor">§</a></h2><div class="dyn-compatibility-info"><p>This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.93.1/reference/items/traits.html#dyn-compatibility">dyn compatible</a>.</p><p><i>In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.</i></p></div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-One-for-f32" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#176">Source</a><a href="#impl-One-for-f32" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.f32.html">f32</a></h3></section></summary><div class="impl-items"><section id="method.one" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#176">Source</a><a href="#method.one" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.f32.html">f32</a></h4></section><section id="method.is_one-1" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#176">Source</a><a href="#method.is_one-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-f64" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#177">Source</a><a href="#impl-One-for-f64" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.f64.html">f64</a></h3></section></summary><div class="impl-items"><section id="method.one-1" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#177">Source</a><a href="#method.one-1" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.f64.html">f64</a></h4></section><section id="method.is_one-2" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#177">Source</a><a href="#method.is_one-2" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-i8" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#170">Source</a><a href="#impl-One-for-i8" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i8.html">i8</a></h3></section></summary><div class="impl-items"><section id="method.one-2" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#170">Source</a><a href="#method.one-2" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i8.html">i8</a></h4></section><section id="method.is_one-3" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#170">Source</a><a href="#method.is_one-3" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-i16" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#171">Source</a><a href="#impl-One-for-i16" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i16.html">i16</a></h3></section></summary><div class="impl-items"><section id="method.one-3" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#171">Source</a><a href="#method.one-3" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i16.html">i16</a></h4></section><section id="method.is_one-4" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#171">Source</a><a href="#method.is_one-4" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-i32" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#172">Source</a><a href="#impl-One-for-i32" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i32.html">i32</a></h3></section></summary><div class="impl-items"><section id="method.one-4" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#172">Source</a><a href="#method.one-4" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i32.html">i32</a></h4></section><section id="method.is_one-5" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#172">Source</a><a href="#method.is_one-5" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-i64" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#173">Source</a><a href="#impl-One-for-i64" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i64.html">i64</a></h3></section></summary><div class="impl-items"><section id="method.one-5" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#173">Source</a><a href="#method.one-5" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i64.html">i64</a></h4></section><section id="method.is_one-6" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#173">Source</a><a href="#method.is_one-6" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-i128" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#174">Source</a><a href="#impl-One-for-i128" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i128.html">i128</a></h3></section></summary><div class="impl-items"><section id="method.one-6" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#174">Source</a><a href="#method.one-6" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.i128.html">i128</a></h4></section><section id="method.is_one-7" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#174">Source</a><a href="#method.is_one-7" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-isize" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#169">Source</a><a href="#impl-One-for-isize" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.isize.html">isize</a></h3></section></summary><div class="impl-items"><section id="method.one-7" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#169">Source</a><a href="#method.one-7" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.isize.html">isize</a></h4></section><section id="method.is_one-8" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#169">Source</a><a href="#method.is_one-8" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-u8" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#163">Source</a><a href="#impl-One-for-u8" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a></h3></section></summary><div class="impl-items"><section id="method.one-8" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#163">Source</a><a href="#method.one-8" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u8.html">u8</a></h4></section><section id="method.is_one-9" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#163">Source</a><a href="#method.is_one-9" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-u16" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#164">Source</a><a href="#impl-One-for-u16" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u16.html">u16</a></h3></section></summary><div class="impl-items"><section id="method.one-9" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#164">Source</a><a href="#method.one-9" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u16.html">u16</a></h4></section><section id="method.is_one-10" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#164">Source</a><a href="#method.is_one-10" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-u32" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#165">Source</a><a href="#impl-One-for-u32" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u32.html">u32</a></h3></section></summary><div class="impl-items"><section id="method.one-10" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#165">Source</a><a href="#method.one-10" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u32.html">u32</a></h4></section><section id="method.is_one-11" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#165">Source</a><a href="#method.is_one-11" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-u64" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#166">Source</a><a href="#impl-One-for-u64" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u64.html">u64</a></h3></section></summary><div class="impl-items"><section id="method.one-11" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#166">Source</a><a href="#method.one-11" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u64.html">u64</a></h4></section><section id="method.is_one-12" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#166">Source</a><a href="#method.is_one-12" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-u128" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#167">Source</a><a href="#impl-One-for-u128" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u128.html">u128</a></h3></section></summary><div class="impl-items"><section id="method.one-12" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#167">Source</a><a href="#method.one-12" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.u128.html">u128</a></h4></section><section id="method.is_one-13" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#167">Source</a><a href="#method.is_one-13" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-usize" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#162">Source</a><a href="#impl-One-for-usize" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.usize.html">usize</a></h3></section></summary><div class="impl-items"><section id="method.one-13" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#162">Source</a><a href="#method.one-13" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.usize.html">usize</a></h4></section><section id="method.is_one-14" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#162">Source</a><a href="#method.is_one-14" class="anchor">§</a><h4 class="code-header">fn <a href="#method.is_one" class="fn">is_one</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.93.1/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-One-for-Wrapping%3CT%3E" class="impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#179-190">Source</a><a href="#impl-One-for-Wrapping%3CT%3E" class="anchor">§</a><h3 class="code-header">impl&lt;T: <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a>&gt; <a class="trait" href="trait.One.html" title="trait num_traits::identities::One">One</a> for <a class="struct" href="https://doc.rust-lang.org/1.93.1/core/num/wrapping/struct.Wrapping.html" title="struct core::num::wrapping::Wrapping">Wrapping</a>&lt;T&gt;<div class="where">where
<a class="struct" href="https://doc.rust-lang.org/1.93.1/core/num/wrapping/struct.Wrapping.html" title="struct core::num::wrapping::Wrapping">Wrapping</a>&lt;T&gt;: <a class="trait" href="https://doc.rust-lang.org/1.93.1/core/ops/arith/trait.Mul.html" title="trait core::ops::arith::Mul">Mul</a>&lt;Output = <a class="struct" href="https://doc.rust-lang.org/1.93.1/core/num/wrapping/struct.Wrapping.html" title="struct core::num::wrapping::Wrapping">Wrapping</a>&lt;T&gt;&gt;,</div></h3></section></summary><div class="impl-items"><section id="method.set_one-1" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#183-185">Source</a><a href="#method.set_one-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.set_one" class="fn">set_one</a>(&amp;mut self)</h4></section><section id="method.one-14" class="method trait-impl"><a class="src rightside" href="../../src/num_traits/identities.rs.html#187-189">Source</a><a href="#method.one-14" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.one" class="fn">one</a>() -&gt; Self</h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"></div><script src="../../trait.impl/num_traits/identities/trait.One.js" data-ignore-extern-crates="std,core" async></script></section></div></main></body></html>