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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="Transforms a token into a char for basic string parsing"><title>AsChar in winnow::stream - Rust</title><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"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="winnow" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-feafe1bb7466e4bd.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">☰</button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../winnow/index.html">winnow</a><span class="version">0.6.5</span></h2></div><h2 class="location"><a href="#">AsChar</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.as_char">as_char</a></li><li><a href="#tymethod.is_alpha">is_alpha</a></li><li><a href="#tymethod.is_alphanum">is_alphanum</a></li><li><a href="#tymethod.is_dec_digit">is_dec_digit</a></li><li><a href="#tymethod.is_hex_digit">is_hex_digit</a></li><li><a href="#tymethod.is_newline">is_newline</a></li><li><a href="#tymethod.is_oct_digit">is_oct_digit</a></li><li><a href="#tymethod.is_space">is_space</a></li><li><a href="#tymethod.len">len</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-AsChar-for-%26char">&'a char</a></li><li><a href="#impl-AsChar-for-%26u8">&'a u8</a></li><li><a href="#impl-AsChar-for-char">char</a></li><li><a href="#impl-AsChar-for-u8">u8</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In winnow::stream</a></h2></div></nav><div class="sidebar-resizer"></div>
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<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../winnow/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">winnow</a>::<wbr><a href="index.html">stream</a>::<wbr><a class="trait" href="#">AsChar</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/winnow/stream/mod.rs.html#3061-3095">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub trait AsChar {
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// Required methods
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fn <a href="#tymethod.as_char" class="fn">as_char</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.char.html">char</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_alpha" class="fn">is_alpha</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_alphanum" class="fn">is_alphanum</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_dec_digit" class="fn">is_dec_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_hex_digit" class="fn">is_hex_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_oct_digit" class="fn">is_oct_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.len" class="fn">len</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_space" class="fn">is_space</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.is_newline" class="fn">is_newline</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a>;
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Transforms a token into a char for basic string parsing</p>
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</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.as_char" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3072">source</a><h4 class="code-header">fn <a href="#tymethod.as_char" class="fn">as_char</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.char.html">char</a></h4></section></summary><div class="docblock"><p>Makes a char from self</p>
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<h5 id="example"><a href="#example">Example</a></h5>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>winnow::stream::AsChar <span class="kw">as _</span>;
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<span class="macro">assert_eq!</span>(<span class="string">'a'</span>.as_char(), <span class="string">'a'</span>);
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<span class="macro">assert_eq!</span>(u8::MAX.as_char(), std::char::from_u32(u8::MAX <span class="kw">as </span>u32).unwrap());</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_alpha" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3078">source</a><h4 class="code-header">fn <a href="#tymethod.is_alpha" class="fn">is_alpha</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests that self is an alphabetic character</p>
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<p><strong>Warning:</strong> for <code>&str</code> it recognizes alphabetic
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characters outside of the 52 ASCII letters</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_alphanum" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3082">source</a><h4 class="code-header">fn <a href="#tymethod.is_alphanum" class="fn">is_alphanum</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests that self is an alphabetic character
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or a decimal digit</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_dec_digit" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3084">source</a><h4 class="code-header">fn <a href="#tymethod.is_dec_digit" class="fn">is_dec_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests that self is a decimal digit</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_hex_digit" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3086">source</a><h4 class="code-header">fn <a href="#tymethod.is_hex_digit" class="fn">is_hex_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests that self is an hex digit</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_oct_digit" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3088">source</a><h4 class="code-header">fn <a href="#tymethod.is_oct_digit" class="fn">is_oct_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests that self is an octal digit</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.len" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3090">source</a><h4 class="code-header">fn <a href="#tymethod.len" class="fn">len</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Gets the len in bytes for self</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_space" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3092">source</a><h4 class="code-header">fn <a href="#tymethod.is_space" class="fn">is_space</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests that self is ASCII space or tab</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.is_newline" class="method"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3094">source</a><h4 class="code-header">fn <a href="#tymethod.is_newline" class="fn">is_newline</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Tests if byte is ASCII newline: \n</p>
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</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-AsChar-for-char" class="impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3175-3212">source</a><a href="#impl-AsChar-for-char" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.AsChar.html" title="trait winnow::stream::AsChar">AsChar</a> for <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.char.html">char</a></h3></section></summary><div class="impl-items"><section id="method.as_char" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3177-3179">source</a><a href="#method.as_char" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.as_char" class="fn">as_char</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.char.html">char</a></h4></section><section id="method.is_alpha" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3181-3183">source</a><a href="#method.is_alpha" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_alpha" class="fn">is_alpha</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section><section id="method.is_alphanum" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3185-3187">source</a><a href="#method.is_alphanum" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_alphanum" class="fn">is_alphanum</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section><section id="method.is_dec_digit" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3189-3191">source</a><a href="#method.is_dec_digit" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_dec_digit" class="fn">is_dec_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section><section id="method.is_hex_digit" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3193-3195">source</a><a href="#method.is_hex_digit" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_hex_digit" class="fn">is_hex_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section><section id="method.is_oct_digit" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3197-3199">source</a><a href="#method.is_oct_digit" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_oct_digit" class="fn">is_oct_digit</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section><section id="method.len" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3201-3203">source</a><a href="#method.len" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.len" class="fn">len</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a></h4></section><section id="method.is_space" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3205-3207">source</a><a href="#method.is_space" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_space" class="fn">is_space</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section><section id="method.is_newline" class="method trait-impl"><a class="src rightside" href="../../src/winnow/stream/mod.rs.html#3209-3211">source</a><a href="#method.is_newline" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.is_newline" class="fn
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