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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="API documentation for the Rust `Folder` trait in crate `rayon`."><meta name="keywords" content="rust, rustlang, rust-lang, Folder"><title>rayon::iter::plumbing::Folder - Rust</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.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='../../../rayon/index.html'><div class='logo-container'><img src='../../../rust-logo.png' alt='logo'></div></a><p class='location'>Trait Folder</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.Result">Result</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.complete">complete</a><a href="#tymethod.consume">consume</a><a href="#tymethod.full">full</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.consume_iter">consume_iter</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../../index.html'>rayon</a>::<wbr><a href='../index.html'>iter</a>::<wbr><a href='index.html'>plumbing</a></p><script>window.sidebarCurrent = {name: 'Folder', 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="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.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="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><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/rayon/iter/plumbing/mod.rs.html#159-193' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../../index.html'>rayon</a>::<wbr><a href='../index.html'>iter</a>::<wbr><a href='index.html'>plumbing</a>::<wbr><a class="trait" href=''>Folder</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait Folder<Item>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
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type <a href='#associatedtype.Result' class="type">Result</a>;
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fn <a href='#tymethod.consume' class='fnname'>consume</a>(self, item: Item) -> Self;
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<div class='item-spacer'></div> fn <a href='#tymethod.complete' class='fnname'>complete</a>(self) -> Self::<a class="type" href="../../../rayon/iter/plumbing/trait.Folder.html#associatedtype.Result" title="type rayon::iter::plumbing::Folder::Result">Result</a>;
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<div class='item-spacer'></div> fn <a href='#tymethod.full' class='fnname'>full</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>;
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fn <a href='#method.consume_iter' class='fnname'>consume_iter</a><I>(self, iter: I) -> Self<br> <span class="where">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a><Item = Item></span>,
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{ ... }
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}</pre></div><div class='docblock'><p>The <code>Folder</code> trait encapsulates <a href="https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.fold">the standard fold
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operation</a>. It can be fed many items using the <code>consume</code>
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method. At the end, once all items have been consumed, it can then
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be converted (using <code>complete</code>) into a final value.</p>
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</div>
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<h2 id='associated-types' class='small-section-header'>Associated Types<a href='#associated-types' class='anchor'></a></h2><div class='methods'><h3 id='associatedtype.Result' class='method'><code id='Result.t'>type <a href='#associatedtype.Result' class="type">Result</a></code></h3><div class='docblock'><p>The type of result that will ultimately be produced by the folder.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.consume' class='method'><code id='consume.v'>fn <a href='#tymethod.consume' class='fnname'>consume</a>(self, item: Item) -> Self</code></h3><div class='docblock'><p>Consume next item and return new sequential state.</p>
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</div><h3 id='tymethod.complete' class='method'><code id='complete.v'>fn <a href='#tymethod.complete' class='fnname'>complete</a>(self) -> Self::<a class="type" href="../../../rayon/iter/plumbing/trait.Folder.html#associatedtype.Result" title="type rayon::iter::plumbing::Folder::Result">Result</a></code></h3><div class='docblock'><p>Finish consuming items, produce final result.</p>
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</div><h3 id='tymethod.full' class='method'><code id='full.v'>fn <a href='#tymethod.full' class='fnname'>full</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></h3><div class='docblock'><p>Hint whether this <code>Folder</code> would like to stop processing
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further items, e.g. if a search has been completed.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='provided-methods' class='small-section-header'>Provided methods<a href='#provided-methods' class='anchor'></a></h2><div class='methods'><h3 id='method.consume_iter' class='method'><code id='consume_iter.v'>fn <a href='#method.consume_iter' class='fnname'>consume_iter</a><I>(self, iter: I) -> Self <span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a><Item = Item>, </span></code></h3><div class='docblock'><p>Consume items from the iterator until full, and return new sequential state.</p>
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<p>This method is <strong>optional</strong>. The default simply iterates over
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<code>iter</code>, invoking <code>consume</code> and checking after each iteration
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whether <code>full</code> returns false.</p>
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<p>The main reason to override it is if you can provide a more
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specialized, efficient implementation.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'></div><span class='loading-content'>Loading content...</span><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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src="../../../implementors/rayon/iter/plumbing/trait.Folder.js">
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