<!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="API documentation for the Rust `Pattern` trait in crate `core`."><meta name="keywords" content="rust, rustlang, rust-lang, Pattern"><title>core::str::pattern::Pattern - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize1.35.0.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc1.35.0.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark1.35.0.css"><link rel="stylesheet" type="text/css" href="../../../light1.35.0.css" id="themeStyle"><script src="../../../storage1.35.0.js"></script><noscript><link rel="stylesheet" href="../../../noscript1.35.0.css"></noscript><link rel="shortcut icon" href="../../../favicon1.35.0.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow1.35.0.svg");}</style></head><body class="rustdoc trait"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../core/index.html'><img src='../../../rust-logo1.35.0.png' alt='logo' width='100'></a><p class='location'>Trait Pattern</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#associated-types">Associated Types</a><div class="sidebar-links"><a href="#associatedtype.Searcher">Searcher</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.into_searcher">into_searcher</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.is_contained_in">is_contained_in</a><a href="#method.is_prefix_of">is_prefix_of</a><a href="#method.is_suffix_of">is_suffix_of</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../../index.html'>core</a>::<wbr><a href='../index.html'>str</a>::<wbr><a href='index.html'>pattern</a></p><script>window.sidebarCurrent = {name: 'Pattern', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush1.35.0.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme1.35.0.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel1.35.0.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span class='since' title='Stable since Rust version '></span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../../src/core/str/pattern.rs.html#28-61' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../../index.html'>core</a>::<wbr><a href='../index.html'>str</a>::<wbr><a href='index.html'>pattern</a>::<wbr><a class="trait" href=''>Pattern</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait Pattern<'a>: <a class="trait" href="../../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
type <a href='#associatedtype.Searcher' class="type">Searcher</a>: <a class="trait" href="../../../core/str/pattern/trait.Searcher.html" title="trait core::str::pattern::Searcher">Searcher</a><'a>;
fn <a href='#tymethod.into_searcher' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> Self::<a class="type" href="../../../core/str/pattern/trait.Pattern.html#associatedtype.Searcher" title="type core::str::pattern::Pattern::Searcher">Searcher</a>;
fn <a href='#method.is_contained_in' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool { ... }
<div class='item-spacer'></div> fn <a href='#method.is_prefix_of' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool { ... }
<div class='item-spacer'></div> fn <a href='#method.is_suffix_of' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool<br> <span class="where">where<br> Self::<a class="type" href="../../../core/str/pattern/trait.Pattern.html#associatedtype.Searcher" title="type core::str::pattern::Pattern::Searcher">Searcher</a>: <a class="trait" href="../../../core/str/pattern/trait.ReverseSearcher.html" title="trait core::str::pattern::ReverseSearcher">ReverseSearcher</a><'a></span>,
{ ... }
}</pre></div><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>A string pattern.</p>
<p>A <code>Pattern<'a></code> expresses that the implementing type
can be used as a string pattern for searching in a <code>&'a str</code>.</p>
<p>For example, both <code>'a'</code> and <code>"aa"</code> are patterns that
would match at index <code>1</code> in the string <code>"baaaab"</code>.</p>
<p>The trait itself acts as a builder for an associated
<code>Searcher</code> type, which does the actual work of finding
occurrences of the pattern in a string.</p>
</div>
<h2 id='associated-types' class='small-section-header'>Associated Types<a href='#associated-types' class='anchor'></a></h2><div class='methods'><h3 id='associatedtype.Searcher' class='method'><code id='Searcher.t'>type <a href='#associatedtype.Searcher' class="type">Searcher</a>: <a class="trait" href="../../../core/str/pattern/trait.Searcher.html" title="trait core::str::pattern::Searcher">Searcher</a><'a></code></h3><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Associated searcher for this pattern</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.into_searcher' class='method'><code id='into_searcher.v'>fn <a href='#tymethod.into_searcher' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> Self::<a class="type" href="../../../core/str/pattern/trait.Pattern.html#associatedtype.Searcher" title="type core::str::pattern::Pattern::Searcher">Searcher</a></code></h3><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Constructs the associated searcher from
<code>self</code> and the <code>haystack</code> to search in.</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='provided-methods' class='small-section-header'>Provided methods<a href='#provided-methods' class='anchor'></a></h2><div class='methods'><h3 id='method.is_contained_in' class='method'><code id='is_contained_in.v'>fn <a href='#method.is_contained_in' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool</code></h3><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Checks whether the pattern matches anywhere in the haystack</p>
</div><h3 id='method.is_prefix_of' class='method'><code id='is_prefix_of.v'>fn <a href='#method.is_prefix_of' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool</code></h3><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Checks whether the pattern matches at the front of the haystack</p>
</div><h3 id='method.is_suffix_of' class='method'><code id='is_suffix_of.v'>fn <a href='#method.is_suffix_of' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool <span class="where fmt-newline">where<br> Self::<a class="type" href="../../../core/str/pattern/trait.Pattern.html#associatedtype.Searcher" title="type core::str::pattern::Pattern::Searcher">Searcher</a>: <a class="trait" href="../../../core/str/pattern/trait.ReverseSearcher.html" title="trait core::str::pattern::ReverseSearcher">ReverseSearcher</a><'a>, </span></code></h3><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Checks whether the pattern matches at the back of the haystack</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-Pattern%3C%27a%3E' class='impl'><code class='in-band'>impl<'a> Pattern<'a> for char</code><a href='#impl-Pattern%3C%27a%3E' class='anchor'></a><a class='srclink' href='../../../src/core/str/pattern.rs.html#422-467' title='goto source code'>[src]</a></h3><div class='docblock'><p>Searches for chars that are equal to a given char</p>
</div><div class='impl-items'><h4 id='associatedtype.Searcher-1' class="type"><code id='Searcher.t-1'>type <a href='#associatedtype.Searcher-1' class="type">Searcher</a> = <a class="struct" href="../../../core/str/pattern/struct.CharSearcher.html" title="struct core::str::pattern::CharSearcher">CharSearcher</a><'a></code></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.into_searcher' class="method hidden"><code id='into_searcher.v-1'>fn <a href='#method.into_searcher' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> Self::<a class="type" href="../../../core/str/pattern/trait.Pattern.html#associatedtype.Searcher" title="type core::str::pattern::Pattern::Searcher">Searcher</a></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#426-437' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_contained_in-1' class="method hidden"><code id='is_contained_in.v-1'>fn <a href='#method.is_contained_in-1' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#440-447' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_prefix_of-1' class="method hidden"><code id='is_prefix_of.v-1'>fn <a href='#method.is_prefix_of-1' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#450-456' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_suffix_of-1' class="method hidden"><code id='is_suffix_of.v-1'>fn <a href='#method.is_suffix_of-1' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool <span class="where fmt-newline">where<br> Self::<a class="type" href="../../../core/str/pattern/trait.Pattern.html#associatedtype.Searcher" title="type core::str::pattern::Pattern::Searcher">Searcher</a>: <a class="trait" href="../../../core/str/pattern/trait.ReverseSearcher.html" title="trait core::str::pattern::ReverseSearcher">ReverseSearcher</a><'a>, </span></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#459-466' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div></div><h3 id='impl-Pattern%3C%27a%3E-1' class='impl'><code class='in-band'>impl<'a, 'b> Pattern<'a> for &'b [char]</code><a href='#impl-Pattern%3C%27a%3E-1' class='anchor'></a><a class='srclink' href='../../../src/core/str/pattern.rs.html#645-647' title='goto source code'>[src]</a></h3><div class='docblock'><p>Searches for chars that are equal to any of the chars in the array</p>
</div><div class='impl-items'><h4 id='associatedtype.Searcher-2' class="type"><code id='Searcher.t-2'>type <a href='#associatedtype.Searcher-2' class="type">Searcher</a> = <a class="struct" href="../../../core/str/pattern/struct.CharSliceSearcher.html" title="struct core::str::pattern::CharSliceSearcher">CharSliceSearcher</a><'a, 'b></code></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.into_searcher-1' class="method hidden"><code id='into_searcher.v-2'>fn <a href='#method.into_searcher-1' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> <a class="struct" href="../../../core/str/pattern/struct.CharSliceSearcher.html" title="struct core::str::pattern::CharSliceSearcher">CharSliceSearcher</a><'a, 'b></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#566-568' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_contained_in-2' class="method hidden"><code id='is_contained_in.v-2'>fn <a href='#method.is_contained_in-2' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#571-573' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_prefix_of-2' class="method hidden"><code id='is_prefix_of.v-2'>fn <a href='#method.is_prefix_of-2' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#576-578' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_suffix_of-2' class="method hidden"><code id='is_suffix_of.v-2'>fn <a href='#method.is_suffix_of-2' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool <span class="where fmt-newline">where<br> <a class="struct" href="../../../core/str/pattern/struct.CharSliceSearcher.html" title="struct core::str::pattern::CharSliceSearcher">CharSliceSearcher</a><'a, 'b>: <a class="trait" href="../../../core/str/pattern/trait.ReverseSearcher.html" title="trait core::str::pattern::ReverseSearcher">ReverseSearcher</a><'a>, </span></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#581-585' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div></div><h3 id='impl-Pattern%3C%27a%3E-2' class='impl'><code class='in-band'>impl<'a, 'b> Pattern<'a> for &'b str</code><a href='#impl-Pattern%3C%27a%3E-2' class='anchor'></a><a class='srclink' href='../../../src/core/str/pattern.rs.html#705-727' title='goto source code'>[src]</a></h3><div class='docblock'><p>Non-allocating substring search.</p>
<p>Will handle the pattern <code>""</code> as returning empty matches at each character
boundary.</p>
</div><div class='impl-items'><h4 id='associatedtype.Searcher-3' class="type"><code id='Searcher.t-3'>type <a href='#associatedtype.Searcher-3' class="type">Searcher</a> = <a class="struct" href="../../../core/str/pattern/struct.StrSearcher.html" title="struct core::str::pattern::StrSearcher">StrSearcher</a><'a, 'b></code></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.into_searcher-2' class="method hidden"><code id='into_searcher.v-3'>fn <a href='#method.into_searcher-2' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> <a class="struct" href="../../../core/str/pattern/struct.StrSearcher.html" title="struct core::str::pattern::StrSearcher">StrSearcher</a><'a, 'b></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#709-711' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_prefix_of-3' class="method"><code id='is_prefix_of.v-3'>fn <a href='#method.is_prefix_of-3' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#715-718' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Checks whether the pattern matches at the front of the haystack</p>
</div><h4 id='method.is_suffix_of-3' class="method"><code id='is_suffix_of.v-3'>fn <a href='#method.is_suffix_of-3' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#722-726' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><div class='docblock'><p>Checks whether the pattern matches at the back of the haystack</p>
</div><h4 id='method.is_contained_in-3' class="method"><code id='is_contained_in.v-3'>fn <a href='../../../core/str/pattern/trait.Pattern.html#method.is_contained_in' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#38-40' title='goto source code'>[src]</a></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div></div><h3 id='impl-Pattern%3C%27a%3E-3' class='impl'><code class='in-band'>impl<'a, 'b, 'c> Pattern<'a> for &'c &'b str</code><a href='#impl-Pattern%3C%27a%3E-3' class='anchor'></a><a class='srclink' href='../../../src/core/str/pattern.rs.html#693-695' title='goto source code'>[src]</a></h3><div class='docblock'><p>Delegates to the <code>&str</code> impl.</p>
</div><div class='impl-items'><h4 id='associatedtype.Searcher-4' class="type"><code id='Searcher.t-4'>type <a href='#associatedtype.Searcher-4' class="type">Searcher</a> = <a class="struct" href="../../../core/str/pattern/struct.StrSearcher.html" title="struct core::str::pattern::StrSearcher">StrSearcher</a><'a, 'b></code></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.into_searcher-3' class="method hidden"><code id='into_searcher.v-4'>fn <a href='#method.into_searcher-3' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> <a class="struct" href="../../../core/str/pattern/struct.StrSearcher.html" title="struct core::str::pattern::StrSearcher">StrSearcher</a><'a, 'b></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#566-568' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_contained_in-4' class="method hidden"><code id='is_contained_in.v-4'>fn <a href='#method.is_contained_in-4' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#571-573' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_prefix_of-4' class="method hidden"><code id='is_prefix_of.v-4'>fn <a href='#method.is_prefix_of-4' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#576-578' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_suffix_of-4' class="method hidden"><code id='is_suffix_of.v-4'>fn <a href='#method.is_suffix_of-4' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool <span class="where fmt-newline">where<br> <a class="struct" href="../../../core/str/pattern/struct.StrSearcher.html" title="struct core::str::pattern::StrSearcher">StrSearcher</a><'a, 'b>: <a class="trait" href="../../../core/str/pattern/trait.ReverseSearcher.html" title="trait core::str::pattern::ReverseSearcher">ReverseSearcher</a><'a>, </span></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#581-585' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div></div><h3 id='impl-Pattern%3C%27a%3E-4' class='impl'><code class='in-band'>impl<'a, F> Pattern<'a> for F <span class="where fmt-newline">where<br> F: <a class="trait" href="../../../core/ops/trait.FnMut.html" title="trait core::ops::FnMut">FnMut</a>(char) -> bool, </span></code><a href='#impl-Pattern%3C%27a%3E-4' class='anchor'></a><a class='srclink' href='../../../src/core/str/pattern.rs.html#684-686' title='goto source code'>[src]</a></h3><div class='docblock'><p>Searches for chars that match the given predicate</p>
</div><div class='impl-items'><h4 id='associatedtype.Searcher-5' class="type"><code id='Searcher.t-5'>type <a href='#associatedtype.Searcher-5' class="type">Searcher</a> = <a class="struct" href="../../../core/str/pattern/struct.CharPredicateSearcher.html" title="struct core::str::pattern::CharPredicateSearcher">CharPredicateSearcher</a><'a, F></code></h4><div class='stability'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.into_searcher-4' class="method hidden"><code id='into_searcher.v-5'>fn <a href='#method.into_searcher-4' class='fnname'>into_searcher</a>(self, haystack: &'a str) -> <a class="struct" href="../../../core/str/pattern/struct.CharPredicateSearcher.html" title="struct core::str::pattern::CharPredicateSearcher">CharPredicateSearcher</a><'a, F></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#566-568' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_contained_in-5' class="method hidden"><code id='is_contained_in.v-5'>fn <a href='#method.is_contained_in-5' class='fnname'>is_contained_in</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#571-573' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_prefix_of-5' class="method hidden"><code id='is_prefix_of.v-5'>fn <a href='#method.is_prefix_of-5' class='fnname'>is_prefix_of</a>(self, haystack: &'a str) -> bool</code><a class='srclink' href='../../../src/core/str/pattern.rs.html#576-578' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
</details></div></div><h4 id='method.is_suffix_of-5' class="method hidden"><code id='is_suffix_of.v-5'>fn <a href='#method.is_suffix_of-5' class='fnname'>is_suffix_of</a>(self, haystack: &'a str) -> bool <span class="where fmt-newline">where<br> <a class="struct" href="../../../core/str/pattern/struct.CharPredicateSearcher.html" title="struct core::str::pattern::CharPredicateSearcher">CharPredicateSearcher</a><'a, F>: <a class="trait" href="../../../core/str/pattern/trait.ReverseSearcher.html" title="trait core::str::pattern::ReverseSearcher">ReverseSearcher</a><'a>, </span></code><a class='srclink' href='../../../src/core/str/pattern.rs.html#581-585' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>pattern</code> <a href="https://github.com/rust-lang/rust/issues/27721">#27721</a>)</summary><p>API not fully fleshed out and ready to be stabilized</p>
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