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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="Specialized formatting trait used by `format_ident!`."><title>IdentFragment in quote - Rust</title><script> if (window.location.protocol !== "file:") document.write(`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2">`)</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-e935ef01ae1c1829.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="quote" data-themes="" data-resource-suffix="" data-rustdoc-version="1.78.0 (9b00956e5 2024-04-29)" data-channel="1.78.0" data-search-js="search-42d8da7a6b9792c2.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-4c98445ec4002617.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-12cf3b4f4f9dc36d.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-04d5337699b92874.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-2c020d218678b618.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]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../quote/index.html">quote</a><span class="version">1.0.36</span></h2></div><h2 class="location"><a href="#">IdentFragment</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.fmt">fmt</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.span">span</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-IdentFragment-for-%26T">&amp;T</a></li><li><a href="#impl-IdentFragment-for-%26mut+T">&amp;mut T</a></li><li><a href="#impl-IdentFragment-for-Cow%3C'_,+T%3E">Cow&lt;&#x27;_, T&gt;</a></li><li><a href="#impl-IdentFragment-for-Ident">Ident</a></li><li><a href="#impl-IdentFragment-for-String">String</a></li><li><a href="#impl-IdentFragment-for-bool">bool</a></li><li><a href="#impl-IdentFragment-for-char">char</a></li><li><a href="#impl-IdentFragment-for-str">str</a></li><li><a href="#impl-IdentFragment-for-u128">u128</a></li><li><a href="#impl-IdentFragment-for-u16">u16</a></li><li><a href="#impl-IdentFragment-for-u32">u32</a></li><li><a href="#impl-IdentFragment-for-u64">u64</a></li><li><a href="#impl-IdentFragment-for-u8">u8</a></li><li><a href="#impl-IdentFragment-for-usize">usize</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In crate quote</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../quote/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="index.html">quote</a>::<wbr><a class="trait" href="#">IdentFragment</a><button id="copy-path" title="Copy item path to clipboard"><img src="../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../src/quote/ident_fragment.rs.html#13-23">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub trait IdentFragment {
// Required method
fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a>;
// Provided method
fn <a href="#method.span" class="fn">span</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a>&gt; { ... }
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Specialized formatting trait used by <code>format_ident!</code>.</p>
<p><a href="../proc_macro2/struct.Ident.html" title="struct proc_macro2::Ident"><code>Ident</code></a> arguments formatted using this trait will have their <code>r#</code> prefix
stripped, if present.</p>
<p>See <a href="macro.format_ident.html" title="macro quote::format_ident"><code>format_ident!</code></a> for more information.</p>
</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.fmt" class="method"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#15">source</a><h4 class="code-header">fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class="docblock"><p>Format this value as an identifier fragment.</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.span" class="method"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#20-22">source</a><h4 class="code-header">fn <a href="#method.span" class="fn">span</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a>&gt;</h4></section></summary><div class="docblock"><p>Span associated with this <code>IdentFragment</code>.</p>
<p>If non-<code>None</code>, may be inherited by formatted identifiers.</p>
</div></details></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-IdentFragment-for-bool" class="impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#87">source</a><a href="#impl-IdentFragment-for-bool" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> for <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.bool.html">bool</a></h3></section></summary><div class="impl-items"><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#87">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IdentFragment-for-char" class="impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#87">source</a><a href="#impl-IdentFragment-for-char" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> for <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.char.html">char</a></h3></section></summary><div class="impl-items"><section id="method.fmt-1" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#87">source</a><a href="#method.fmt-1" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IdentFragment-for-str" class="impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#87">source</a><a href="#impl-IdentFragment-for-str" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> for <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.str.html">str</a></h3></section></summary><div class="impl-items"><section id="method.fmt-2" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#87">source</a><a href="#method.fmt-2" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IdentFragment-for-u8" class="impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#88">source</a><a href="#impl-IdentFragment-for-u8" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> for <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.u8.html">u8</a></h3></section></summary><div class="impl-items"><section id="method.fmt-3" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragmen
T: <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> + <a class="trait" href="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><section id="method.span-2" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#64-66">source</a><a href="#method.span-2" class="anchor">§</a><h4 class="code-header">fn <a href="#method.span" class="fn">span</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a>&gt;</h4></section><section id="method.fmt-11" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#68-70">source</a><a href="#method.fmt-11" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IdentFragment-for-%26T" class="impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#25-33">source</a><a href="#impl-IdentFragment-for-%26T" class="anchor">§</a><h3 class="code-header">impl&lt;T: <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt; <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> for <a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&amp;T</a></h3></section></summary><div class="impl-items"><section id="method.span-3" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#26-28">source</a><a href="#method.span-3" class="anchor">§</a><h4 class="code-header">fn <a href="#method.span" class="fn">span</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a>&gt;</h4></section><section id="method.fmt-12" class="method trait-impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#30-32">source</a><a href="#method.fmt-12" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IdentFragment-for-%26mut+T" class="impl"><a class="src rightside" href="../src/quote/ident_fragment.rs.html#35-43">source</a><a href="#impl-IdentFragment-for-%26mut+T" class="anchor">§</a><h3 class="code-header">impl&lt;T: <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> + ?<a class="trait" href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt; <a class="trait" href="trait.IdentFragment.html" title="trait quote::IdentFragment">IdentFragment</a> for <a class="primitive"