<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="A hash map implemented with quadratic probing and SIMD lookup."><title>hashbrown::hash_map - Rust</title><script>if(window.location.protocol!=="file:")document.write(`<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">`)</script><linkrel="stylesheet"href="../../static.files/normalize-76eba96aa4d2e634.css"><linkrel="stylesheet"href="../../static.files/rustdoc-e935ef01ae1c1829.css"><metaname="rustdoc-vars"data-root-path="../../"data-static-root-path="../../static.files/"data-current-crate="hashbrown"data-themes=""data-resource-suffix=""data-rustdoc-version="1.78.0 (9b00956e5 2024-04-29)"data-channel="1.78.0"data-search-js="search-42d8da7a6b9792c2.js"data-settings-js="settings-4313503d2e1961c2.js"><scriptsrc="../../static.files/storage-4c98445ec4002617.js"></script><scriptdefersrc="../sidebar-items.js"></script><scriptdefersrc="../../static.files/main-12cf3b4f4f9dc36d.js"></script><noscript><linkrel="stylesheet"href="../../static.files/noscript-04d5337699b92874.css"></noscript><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-32x32-422f7d1d52889060.png"><linkrel="icon"type="image/svg+xml"href="../../static.files/favicon-2c020d218678b618.svg"></head><bodyclass="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle"title="show sidebar"></button></nav><navclass="sidebar"><divclass="sidebar-crate"><h2><ahref="../../hashbrown/index.html">hashbrown</a><spanclass="version">0.14.5</span></h2></div><h2class="location"><ahref="#">Module hash_map</a></h2><divclass="sidebar-elems"><section><ulclass="block"><li><ahref="#structs">Structs</a></li><li><ahref="#enums">Enums</a></li></ul></section><h2><ahref="../index.html">In crate hashbrown</a></h2></div></nav><divclass="sidebar-resizer"></div>
<main><divclass="width-limiter"><navclass="sub"><formclass="search-form"><span></span><divid="sidebar-button"tabindex="-1"><ahref="../../hashbrown/all.html"title="show sidebar"></a></div><inputclass="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"><divid="help-button"tabindex="-1"><ahref="../../help.html"title="help">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><sectionid="main-content"class="content"><divclass="main-heading"><h1>Module <ahref="../index.html">hashbrown</a>::<wbr><aclass="mod"href="#">hash_map</a><buttonid="copy-path"title="Copy item path to clipboard"><imgsrc="../../static.files/clipboard-7571035ce49a181d.svg"width="19"height="18"alt="Copy item path"></button></h1><spanclass="out-of-band"><aclass="src"href="../../src/hashbrown/lib.rs.html#87">source</a> · <buttonid="toggle-all-docs"title="collapse all docs">[<span>−</span>]</button></span></div><detailsclass="toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>A hash map implemented with quadratic probing and SIMD lookup.</p>
</div></details><h2id="structs"class="section-header">Structs<ahref="#structs"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="struct"href="struct.Drain.html"title="struct hashbrown::hash_map::Drain">Drain</a></div><divclass="desc docblock-short">A draining iterator over the entries of a <code>HashMap</code> in arbitrary
order. The iterator element type is <code>(K, V)</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.ExtractIf.html"title="struct hashbrown::hash_map::ExtractIf">ExtractIf</a></div><divclass="desc docblock-short">A draining iterator over entries of a <code>HashMap</code> which don’t satisfy the predicate
<code>f(&k, &mut v)</code> in arbitrary order. The iterator element type is <code>(K, V)</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.HashMap.html"title="struct hashbrown::hash_map::HashMap">HashMap</a></div><divclass="desc docblock-short">A hash map implemented with quadratic probing and SIMD lookup.</div></li><li><divclass="item-name"><aclass="struct"href="struct.IntoIter.html"title="struct hashbrown::hash_map::IntoIter">IntoIter</a></div><divclass="desc docblock-short">An owning iterator over the entries of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>(K, V)</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.IntoKeys.html"title="struct hashbrown::hash_map::IntoKeys">IntoKeys</a></div><divclass="desc docblock-short">An owning iterator over the keys of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>K</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.IntoValues.html"title="struct hashbrown::hash_map::IntoValues">IntoValues</a></div><divclass="desc docblock-short">An owning iterator over the values of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>V</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.Iter.html"title="struct hashbrown::hash_map::Iter">Iter</a></div><divclass="desc docblock-short">An iterator over the entries of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>(&'a K, &'a V)</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.IterMut.html"title="struct hashbrown::hash_map::IterMut">IterMut</a></div><divclass="desc docblock-short">A mutable iterator over the entries of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>(&'a K, &'a mut V)</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.Keys.html"title="struct hashbrown::hash_map::Keys">Keys</a></div><divclass="desc docblock-short">An iterator over the keys of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>&'a K</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.OccupiedEntry.html"title="struct hashbrown::hash_map::OccupiedEntry">OccupiedEntry</a></div><divclass="desc docblock-short">A view into an occupied entry in a <code>HashMap</code>.
It is part of the <ahref="enum.Entry.html"><code>Entry</code></a> enum.</div></li><li><divclass="item-name"><aclass="struct"href="struct.OccupiedEntryRef.html"title="struct hashbrown::hash_map::OccupiedEntryRef">OccupiedEntryRef</a></div><divclass="desc docblock-short">A view into an occupied entry in a <code>HashMap</code>.
It is part of the <ahref="enum.EntryRef.html"><code>EntryRef</code></a> enum.</div></li><li><divclass="item-name"><aclass="struct"href="struct.OccupiedError.html"title="struct hashbrown::hash_map::OccupiedError">OccupiedError</a></div><divclass="desc docblock-short">The error returned by <ahref="struct.HashMap.html#method.try_insert"title="method hashbrown::hash_map::HashMap::try_insert"><code>try_insert</code></a> when the key already exists.</div></li><li><divclass="item-name"><aclass="struct"href="struct.RawEntryBuilder.html"title="struct hashbrown::hash_map::RawEntryBuilder">RawEntryBuilder</a></div><divclass="desc docblock-short">A builder for computing where in a <ahref="struct.HashMap.html"title="struct hashbrown::hash_map::HashMap"><code>HashMap</code></a> a key-value pair would be stored.</div></li><li><divclass="item-name"><aclass="struct"href="struct.RawEntryBuilderMut.html"title="struct hashbrown::hash_map::RawEntryBuilderMut">RawEntryBuilderMut</a></div><divclass="desc docblock-short">A builder for computing where in a <ahref="struct.HashMap.html"title="struct hashbrown::hash_map::HashMap"><code>HashMap</code></a> a key-value pair would be stored.</div></li><li><divclass="item-name"><aclass="struct"href="struct.RawOccupiedEntryMut.html"title="struct hashbrown::hash_map::RawOccupiedEntryMut">RawOccupiedEntryMut</a></div><divclass="desc docblock-short">A view into an occupied entry in a <code>HashMap</code>.
It is part of the <ahref="enum.RawEntryMut.html"><code>RawEntryMut</code></a> enum.</div></li><li><divclass="item-name"><aclass="struct"href="struct.RawVacantEntryMut.html"title="struct hashbrown::hash_map::RawVacantEntryMut">RawVacantEntryMut</a></div><divclass="desc docblock-short">A view into a vacant entry in a <code>HashMap</code>.
It is part of the <ahref="enum.RawEntryMut.html"><code>RawEntryMut</code></a> enum.</div></li><li><divclass="item-name"><aclass="struct"href="struct.VacantEntry.html"title="struct hashbrown::hash_map::VacantEntry">VacantEntry</a></div><divclass="desc docblock-short">A view into a vacant entry in a <code>HashMap</code>.
It is part of the <ahref="enum.Entry.html"><code>Entry</code></a> enum.</div></li><li><divclass="item-name"><aclass="struct"href="struct.VacantEntryRef.html"title="struct hashbrown::hash_map::VacantEntryRef">VacantEntryRef</a></div><divclass="desc docblock-short">A view into a vacant entry in a <code>HashMap</code>.
It is part of the <ahref="enum.EntryRef.html"><code>EntryRef</code></a> enum.</div></li><li><divclass="item-name"><aclass="struct"href="struct.Values.html"title="struct hashbrown::hash_map::Values">Values</a></div><divclass="desc docblock-short">An iterator over the values of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>&'a V</code>.</div></li><li><divclass="item-name"><aclass="struct"href="struct.ValuesMut.html"title="struct hashbrown::hash_map::ValuesMut">ValuesMut</a></div><divclass="desc docblock-short">A mutable iterator over the values of a <code>HashMap</code> in arbitrary order.
The iterator element type is <code>&'a mut V</code>.</div></li></ul><h2id="enums"class="section-header">Enums<ahref="#enums"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="enum"href="enum.DefaultHashBuilder.html"title="enum hashbrown::hash_map::DefaultHashBuilder">DefaultHashBuilder</a></div><divclass="desc docblock-short">Dummy default hasher for <code>HashMap</code>.</div></li><li><divclass="item-name"><aclass="enum"href="enum.Entry.html"title="enum hashbrown::hash_map::Entry">Entry</a></div><divclass="desc docblock-short">A view into a single entry in a map, which may either be vacant or occupied.</div></li><li><divclass="item-name"><aclass="enum"href="enum.EntryRef.html"title="enum hashbrown::hash_map::EntryRef">EntryRef</a></div><divclass="desc docblock-short">A view into a single entry in a map, which may either be vacant or occupied,
with any borrowed form of the map’s key type.</div></li><li><divclass="item-name"><aclass="enum"href="enum.RawEntryMut.html"title="enum hashbrown::hash_map::RawEntryMut">RawEntryMut</a></div><divclass="desc docblock-short">A view into a single entry in a map, which may either be vacant or occupied.</div></li></ul></section></div></main></body></html>