| <!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 configurable builder for a regular expression."><meta name="keywords" content="rust, rustlang, rust-lang, RegexBuilder"><title>RegexBuilder in regex - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" 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class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../regex/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">RegexBuilder</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.build">build</a></li><li><a href="#method.case_insensitive">case_insensitive</a></li><li><a href="#method.dfa_size_limit">dfa_size_limit</a></li><li><a href="#method.dot_matches_new_line">dot_matches_new_line</a></li><li><a href="#method.ignore_whitespace">ignore_whitespace</a></li><li><a href="#method.multi_line">multi_line</a></li><li><a href="#method.nest_limit">nest_limit</a></li><li><a href="#method.new">new</a></li><li><a href="#method.octal">octal</a></li><li><a href="#method.size_limit">size_limit</a></li><li><a href="#method.swap_greed">swap_greed</a></li><li><a href="#method.unicode">unicode</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Debug-for-RegexBuilder">Debug</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-RegexBuilder">RefUnwindSafe</a></li><li><a href="#impl-Send-for-RegexBuilder">Send</a></li><li><a href="#impl-Sync-for-RegexBuilder">Sync</a></li><li><a href="#impl-Unpin-for-RegexBuilder">Unpin</a></li><li><a href="#impl-UnwindSafe-for-RegexBuilder">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-RegexBuilder">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-RegexBuilder">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-RegexBuilder">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-RegexBuilder">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-RegexBuilder">Into<U></a></li><li><a href="#impl-TryFrom%3CU%3E-for-RegexBuilder">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-RegexBuilder">TryInto<U></a></li></ul></section><h2><a href="index.html">In regex</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="index.html">regex</a>::<wbr><a class="struct" href="#">RegexBuilder</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../src/regex/re_builder.rs.html#232">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct RegexBuilder(_);</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A configurable builder for a regular expression.</p> |
| <p>A builder can be used to configure how the regex is built, for example, by |
| setting the default flags (which can be overridden in the expression |
| itself) or setting various limits.</p> |
| </div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><a href="#impl-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.new" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fnname">new</a>(pattern: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Create a new regular expression builder with the given pattern.</p> |
| <p>If the pattern is invalid, then an error will be returned when |
| <code>build</code> is called.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.build" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.build" class="fnname">build</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="struct.Regex.html" title="struct regex::Regex">Regex</a>, <a class="enum" href="enum.Error.html" title="enum regex::Error">Error</a>></h4></section></summary><div class="docblock"><p>Consume the builder and compile the regular expression.</p> |
| <p>Note that calling <code>as_str</code> on the resulting <code>Regex</code> will produce the |
| pattern given to <code>new</code> verbatim. Notably, it will not incorporate any |
| of the flags set on this builder.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.case_insensitive" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.case_insensitive" class="fnname">case_insensitive</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the value for the case insensitive (<code>i</code>) flag.</p> |
| <p>When enabled, letters in the pattern will match both upper case and |
| lower case variants.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.multi_line" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.multi_line" class="fnname">multi_line</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the value for the multi-line matching (<code>m</code>) flag.</p> |
| <p>When enabled, <code>^</code> matches the beginning of lines and <code>$</code> matches the |
| end of lines.</p> |
| <p>By default, they match beginning/end of the input.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.dot_matches_new_line" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.dot_matches_new_line" class="fnname">dot_matches_new_line</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the value for the any character (<code>s</code>) flag, where in <code>.</code> matches |
| anything when <code>s</code> is set and matches anything except for new line when |
| it is not set (the default).</p> |
| <p>N.B. “matches anything” means “any byte” when Unicode is disabled and |
| means “any valid UTF-8 encoding of any Unicode scalar value” when |
| Unicode is enabled.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.swap_greed" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.swap_greed" class="fnname">swap_greed</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the value for the greedy swap (<code>U</code>) flag.</p> |
| <p>When enabled, a pattern like <code>a*</code> is lazy (tries to find shortest |
| match) and <code>a*?</code> is greedy (tries to find longest match).</p> |
| <p>By default, <code>a*</code> is greedy and <code>a*?</code> is lazy.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.ignore_whitespace" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.ignore_whitespace" class="fnname">ignore_whitespace</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the value for the ignore whitespace (<code>x</code>) flag.</p> |
| <p>When enabled, whitespace such as new lines and spaces will be ignored |
| between expressions of the pattern, and <code>#</code> can be used to start a |
| comment until the next new line.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.unicode" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.unicode" class="fnname">unicode</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the value for the Unicode (<code>u</code>) flag.</p> |
| <p>Enabled by default. When disabled, character classes such as <code>\w</code> only |
| match ASCII word characters instead of all Unicode word characters.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.octal" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.octal" class="fnname">octal</a>(&mut self, yes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Whether to support octal syntax or not.</p> |
| <p>Octal syntax is a little-known way of uttering Unicode codepoints in |
| a regular expression. For example, <code>a</code>, <code>\x61</code>, <code>\u0061</code> and |
| <code>\141</code> are all equivalent regular expressions, where the last example |
| shows octal syntax.</p> |
| <p>While supporting octal syntax isn’t in and of itself a problem, it does |
| make good error messages harder. That is, in PCRE based regex engines, |
| syntax like <code>\0</code> invokes a backreference, which is explicitly |
| unsupported in Rust’s regex engine. However, many users expect it to |
| be supported. Therefore, when octal support is disabled, the error |
| message will explicitly mention that backreferences aren’t supported.</p> |
| <p>Octal syntax is disabled by default.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.size_limit" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.size_limit" class="fnname">size_limit</a>(&mut self, limit: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the approximate size limit of the compiled regular expression.</p> |
| <p>This roughly corresponds to the number of bytes occupied by a single |
| compiled program. If the program exceeds this number, then a |
| compilation error is returned.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.dfa_size_limit" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.dfa_size_limit" class="fnname">dfa_size_limit</a>(&mut self, limit: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the approximate size of the cache used by the DFA.</p> |
| <p>This roughly corresponds to the number of bytes that the DFA will |
| use while searching.</p> |
| <p>Note that this is a <em>per thread</em> limit. There is no way to set a global |
| limit. In particular, if a regex is used from multiple threads |
| simultaneously, then each thread may use up to the number of bytes |
| specified here.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.nest_limit" class="method has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><h4 class="code-header">pub fn <a href="#method.nest_limit" class="fnname">nest_limit</a>(&mut self, limit: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> &mut <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h4></section></summary><div class="docblock"><p>Set the nesting limit for this parser.</p> |
| <p>The nesting limit controls how deep the abstract syntax tree is allowed |
| to be. If the AST exceeds the given limit (e.g., with too many nested |
| groups), then an error is returned by the parser.</p> |
| <p>The purpose of this limit is to act as a heuristic to prevent stack |
| overflow for consumers that do structural induction on an <code>Ast</code> using |
| explicit recursion. While this crate never does this (instead using |
| constant stack space and moving the call stack to the heap), other |
| crates may.</p> |
| <p>This limit is not checked until the entire Ast is parsed. Therefore, |
| if callers want to put a limit on the amount of heap space used, then |
| they should impose a limit on the length, in bytes, of the concrete |
| pattern string. In particular, this is viable since this parser |
| implementation will limit itself to heap space proportional to the |
| length of the pattern string.</p> |
| <p>Note that a nest limit of <code>0</code> will return a nest limit error for most |
| patterns but not all. For example, a nest limit of <code>0</code> permits <code>a</code> but |
| not <code>ab</code>, since <code>ab</code> requires a concatenation, which results in a nest |
| depth of <code>1</code>. In general, a nest limit is not something that manifests |
| in an obvious way in the concrete syntax, therefore, it should not be |
| used in a granular way.</p> |
| </div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><a href="#impl-Debug-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/regex/re_builder.rs.html#232">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/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/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-RegexBuilder" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section><section id="impl-Send-for-RegexBuilder" class="impl has-srclink"><a href="#impl-Send-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section><section id="impl-Sync-for-RegexBuilder" class="impl has-srclink"><a href="#impl-Sync-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section><section id="impl-Unpin-for-RegexBuilder" class="impl has-srclink"><a href="#impl-Unpin-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section><section id="impl-UnwindSafe-for-RegexBuilder" class="impl has-srclink"><a href="#impl-UnwindSafe-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.RegexBuilder.html" title="struct regex::RegexBuilder">RegexBuilder</a></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#200">source</a><a href="#impl-Any-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#201">source</a><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/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/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#impl-Borrow%3CT%3E-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220">source</a><a href="#impl-BorrowMut%3CT%3E-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#733">source</a><a href="#impl-From%3CT%3E-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#736">source</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#717">source</a><a href="#impl-Into%3CU%3E-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#725">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p> |
| <p>That is, this conversion is whatever the implementation of |
| <code><a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#775">source</a><a href="#impl-TryFrom%3CU%3E-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/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="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#781">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/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="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-RegexBuilder" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#760">source</a><a href="#impl-TryInto%3CU%3E-for-RegexBuilder" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/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="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#766">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/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></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="regex" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
