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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="A set of look-around assertions."><title>LookSet in regex_syntax::hir - 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="regex_syntax" 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 struct"><!--[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="../../regex_syntax/index.html">regex_syntax</a><span class="version">0.8.2</span></h2></div><h2 class="location"><a href="#">LookSet</a></h2><div class="sidebar-elems"><section><h3><a href="#fields">Fields</a></h3><ul class="block structfield"><li><a href="#structfield.bits">bits</a></li></ul><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.contains">contains</a></li><li><a href="#method.contains_anchor">contains_anchor</a></li><li><a href="#method.contains_anchor_crlf">contains_anchor_crlf</a></li><li><a href="#method.contains_anchor_haystack">contains_anchor_haystack</a></li><li><a href="#method.contains_anchor_lf">contains_anchor_lf</a></li><li><a href="#method.contains_anchor_line">contains_anchor_line</a></li><li><a href="#method.contains_word">contains_word</a></li><li><a href="#method.contains_word_ascii">contains_word_ascii</a></li><li><a href="#method.contains_word_unicode">contains_word_unicode</a></li><li><a href="#method.empty">empty</a></li><li><a href="#method.full">full</a></li><li><a href="#method.insert">insert</a></li><li><a href="#method.intersect">intersect</a></li><li><a href="#method.is_empty">is_empty</a></li><li><a href="#method.iter">iter</a></li><li><a href="#method.len">len</a></li><li><a href="#method.read_repr">read_repr</a></li><li><a href="#method.remove">remove</a></li><li><a href="#method.set_insert">set_insert</a></li><li><a href="#method.set_intersect">set_intersect</a></li><li><a href="#method.set_remove">set_remove</a></li><li><a href="#method.set_subtract">set_subtract</a></li><li><a href="#method.set_union">set_union</a></li><li><a href="#method.singleton">singleton</a></li><li><a href="#method.subtract">subtract</a></li><li><a href="#method
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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="../../regex_syntax/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>Struct <a href="../index.html">regex_syntax</a>::<wbr><a href="index.html">hir</a>::<wbr><a class="struct" href="#">LookSet</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/regex_syntax/hir/mod.rs.html#2653-2664">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub struct LookSet {
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pub bits: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u32.html">u32</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>A set of look-around assertions.</p>
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<p>This is useful for efficiently tracking look-around assertions. For
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example, an <a href="struct.Hir.html" title="struct regex_syntax::hir::Hir"><code>Hir</code></a> provides properties that return <code>LookSet</code>s.</p>
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</div></details><h2 id="fields" class="fields section-header">Fields<a href="#fields" class="anchor">§</a></h2><span id="structfield.bits" class="structfield section-header"><a href="#structfield.bits" class="anchor field">§</a><code>bits: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u32.html">u32</a></code></span><div class="docblock"><p>The underlying representation this set is exposed to make it possible
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to store it somewhere efficiently. The representation is that
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of a bitset, where each assertion occupies bit <code>i</code> where <code>i = Look::as_repr()</code>.</p>
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<p>Note that users of this internal representation must permit the full
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range of <code>u16</code> values to be represented. For example, even if the
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current implementation only makes use of the 10 least significant bits,
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it may use more bits in a future semver compatible release.</p>
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</div><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2666-2886">source</a><a href="#impl-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.empty" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2669-2671">source</a><h4 class="code-header">pub fn <a href="#method.empty" class="fn">empty</a>() -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Create an empty set of look-around assertions.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.full" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2677-2679">source</a><h4 class="code-header">pub fn <a href="#method.full" class="fn">full</a>() -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Create a full set of look-around assertions.</p>
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<p>This set contains all possible look-around assertions.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.singleton" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2686-2688">source</a><h4 class="code-header">pub fn <a href="#method.singleton" class="fn">singleton</a>(look: <a class="enum" href="enum.Look.html" title="enum regex_syntax::hir::Look">Look</a>) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Create a look-around set containing the look-around assertion given.</p>
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<p>This is a convenience routine for creating an empty set and inserting
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one look-around assertions.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.len" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2692-2696">source</a><h4 class="code-header">pub fn <a href="#method.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>Returns the total number of look-around assertions in this set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.is_empty" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2700-2702">source</a><h4 class="code-header">pub fn <a href="#method.is_empty" class="fn">is_empty</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>Returns true if and only if this set is empty.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2707-2709">source</a><h4 class="code-header">pub fn <a href="#method.contains" class="fn">contains</a>(self, look: <a class="enum" href="enum.Look.html" title="enum regex_syntax::hir::Look">Look</a>) -> <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>Returns true if and only if the given look-around assertion is in this
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set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_anchor" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2714-2716">source</a><h4 class="code-header">pub fn <a href="#method.contains_anchor" class="fn">contains_anchor</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>Returns true if and only if this set contains any anchor assertions.
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This includes both “start/end of haystack” and “start/end of line.”</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_anchor_haystack" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2721-2723">source</a><h4 class="code-header">pub fn <a href="#method.contains_anchor_haystack" class="fn">contains_anchor_haystack</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>Returns true if and only if this set contains any “start/end of
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haystack” anchors. This doesn’t include “start/end of line” anchors.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_anchor_line" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2729-2734">source</a><h4 class="code-header">pub fn <a href="#method.contains_anchor_line" class="fn">contains_anchor_line</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>Returns true if and only if this set contains any “start/end of line”
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anchors. This doesn’t include “start/end of haystack” anchors. This
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includes both <code>\n</code> line anchors and CRLF (<code>\r\n</code>) aware line anchors.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_anchor_lf" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2740-2742">source</a><h4 class="code-header">pub fn <a href="#method.contains_anchor_lf" class="fn">contains_anchor_lf</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>Returns true if and only if this set contains any “start/end of line”
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anchors that only treat <code>\n</code> as line terminators. This does not include
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haystack anchors or CRLF aware line anchors.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_anchor_crlf" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2748-2750">source</a><h4 class="code-header">pub fn <a href="#method.contains_anchor_crlf" class="fn">contains_anchor_crlf</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>Returns true if and only if this set contains any “start/end of line”
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anchors that are CRLF-aware. This doesn’t include “start/end of
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haystack” or “start/end of line-feed” anchors.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_word" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2756-2758">source</a><h4 class="code-header">pub fn <a href="#method.contains_word" class="fn">contains_word</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>Returns true if and only if this set contains any word boundary or
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negated word boundary assertions. This include both Unicode and ASCII
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word boundaries.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_word_unicode" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2763-2770">source</a><h4 class="code-header">pub fn <a href="#method.contains_word_unicode" class="fn">contains_word_unicode</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>Returns true if and only if this set contains any Unicode word boundary
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or negated Unicode word boundary assertions.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.contains_word_ascii" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2775-2782">source</a><h4 class="code-header">pub fn <a href="#method.contains_word_ascii" class="fn">contains_word_ascii</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>Returns true if and only if this set contains any ASCII word boundary
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or negated ASCII word boundary assertions.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.iter" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2786-2788">source</a><h4 class="code-header">pub fn <a href="#method.iter" class="fn">iter</a>(self) -> <a class="struct" href="struct.LookSetIter.html" title="struct regex_syntax::hir::LookSetIter">LookSetIter</a> <a href="#" class="tooltip" data-notable-ty="LookSetIter">ⓘ</a></h4></section></summary><div class="docblock"><p>Returns an iterator over all of the look-around assertions in this set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.insert" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2794-2796">source</a><h4 class="code-header">pub fn <a href="#method.insert" class="fn">insert</a>(self, look: <a class="enum" href="enum.Look.html" title="enum regex_syntax::hir::Look">Look</a>) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Return a new set that is equivalent to the original, but with the given
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assertion added to it. If the assertion is already in the set, then the
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returned set is equivalent to the original.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.set_insert" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2801-2803">source</a><h4 class="code-header">pub fn <a href="#method.set_insert" class="fn">set_insert</a>(&mut self, look: <a class="enum" href="enum.Look.html" title="enum regex_syntax::hir::Look">Look</a>)</h4></section></summary><div class="docblock"><p>Updates this set in place with the result of inserting the given
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assertion into this set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.remove" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2809-2811">source</a><h4 class="code-header">pub fn <a href="#method.remove" class="fn">remove</a>(self, look: <a class="enum" href="enum.Look.html" title="enum regex_syntax::hir::Look">Look</a>) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Return a new set that is equivalent to the original, but with the given
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assertion removed from it. If the assertion is not in the set, then the
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returned set is equivalent to the original.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.set_remove" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2816-2818">source</a><h4 class="code-header">pub fn <a href="#method.set_remove" class="fn">set_remove</a>(&mut self, look: <a class="enum" href="enum.Look.html" title="enum regex_syntax::hir::Look">Look</a>)</h4></section></summary><div class="docblock"><p>Updates this set in place with the result of removing the given
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assertion from this set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.subtract" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2823-2825">source</a><h4 class="code-header">pub fn <a href="#method.subtract" class="fn">subtract</a>(self, other: <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a>) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a new set that is the result of subtracting the given set from
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this set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.set_subtract" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2830-2832">source</a><h4 class="code-header">pub fn <a href="#method.set_subtract" class="fn">set_subtract</a>(&mut self, other: <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a>)</h4></section></summary><div class="docblock"><p>Updates this set in place with the result of subtracting the given set
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from this set.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.union" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2836-2838">source</a><h4 class="code-header">pub fn <a href="#method.union" class="fn">union</a>(self, other: <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a>) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a new set that is the union of this and the one given.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.set_union" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2843-2845">source</a><h4 class="code-header">pub fn <a href="#method.set_union" class="fn">set_union</a>(&mut self, other: <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a>)</h4></section></summary><div class="docblock"><p>Updates this set in place with the result of unioning it with the one
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given.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.intersect" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2849-2851">source</a><h4 class="code-header">pub fn <a href="#method.intersect" class="fn">intersect</a>(self, other: <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a>) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a new set that is the intersection of this and the one given.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.set_intersect" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2856-2858">source</a><h4 class="code-header">pub fn <a href="#method.set_intersect" class="fn">set_intersect</a>(&mut self, other: <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a>)</h4></section></summary><div class="docblock"><p>Updates this set in place with the result of intersecting it with the
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one given.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.read_repr" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2867-2870">source</a><h4 class="code-header">pub fn <a href="#method.read_repr" class="fn">read_repr</a>(slice: &[<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u8.html">u8</a>]) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Return a <code>LookSet</code> from the slice given as a native endian 32-bit
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integer.</p>
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<h5 id="panics"><a href="#panics">Panics</a></h5>
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<p>This panics if <code>slice.len() < 4</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.write_repr" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2879-2885">source</a><h4 class="code-header">pub fn <a href="#method.write_repr" class="fn">write_repr</a>(self, slice: &mut [<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u8.html">u8</a>])</h4></section></summary><div class="docblock"><p>Write a <code>LookSet</code> as a native endian 32-bit integer to the beginning
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of the slice given.</p>
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<h5 id="panics-1"><a href="#panics-1">Panics</a></h5>
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<p>This panics if <code>slice.len() < 4</code>.</p>
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</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#impl-Clone-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&self) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.76.0/src/core/clone.rs.html#169">source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&Self</a>)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2888-2898">source</a><a href="#impl-Debug-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2889-2897">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.76.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.76.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#impl-Default-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/defaul
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by <code>==</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.ne" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.76.0/src/core/cmp.rs.html#242">source</a></span><a href="#method.ne" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/cmp/trait.PartialEq.html#method.ne" class="fn">ne</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>This method tests for <code>!=</code>. The default implementation is almost always
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sufficient, and should not be overridden without very good reason.</div></details></div></details><section id="impl-Copy-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#impl-Copy-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-Eq-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#impl-Eq-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-StructuralEq-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#impl-StructuralEq-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.StructuralEq.html" title="trait core::marker::StructuralEq">StructuralEq</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-StructuralPartialEq-for-LookSet" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2652">source</a><a href="#impl-StructuralPartialEq-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.StructuralPartialEq.html" title="trait core::marker::StructuralPartialEq">StructuralPartialEq</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-LookSet" class="impl"><a href="#impl-RefUnwindSafe-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-Send-for-LookSet" class="impl"><a href="#impl-Send-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-Sync-for-LookSet" class="impl"><a href="#impl-Sync-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-Unpin-for-LookSet" class="impl"><a href="#impl-Unpin-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h3></section><section id="impl-UnwindSafe-for-LookSet" class="impl"><a href="#impl-UnwindSafe-for-LookSet" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_
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T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/any.rs.html#141">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.76.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.76.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#208">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#210">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#216">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#217">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#763">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#766">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#747-749">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#756">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToOwned-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/alloc/borrow.rs.html#83-85">source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl"><a href="#associatedtype.Owned" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/alloc/borrow.rs.html#88">source</a><a href="#method.to_owned" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/alloc/borrow.rs.html#92">source</a><a href="#method.clone_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&mut T</a>)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#803-805">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#810">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#788-790">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#795">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div><script type="text/json" id="notable-traits-data">{"LookSetIter":"<h3>Notable traits for <code><a class=\"struct\" href=\"struct.LookSetIter.html\" title=\"struct regex_syntax::hir::LookSetIter\">LookSetIter</a></code></h3><pre><code><div class=\"where\">impl <a class=\"trait\" href=\"https://doc.rust-lang.org/1.76.0/core/iter/traits/iterator/trait.Iterator.html\" title=\"trait core::iter::traits::iterator::Iterator\">Iterator</a> for <a class=\"struct\" href=\"struct.LookSetIter.html\" title=\"struct regex_syntax::hir::LookSetIter\">LookSetIter</a></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.76.0/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item\" class=\"associatedtype\">Item</a> = <a class=\"enum\" href=\"enum.Look.html\" title=\"enum regex_syntax::hir::Look\">Look</a>;</div>"}</script></section></div></main></body></html>
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