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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 `collections` mod in crate `abstutil`."><meta name="keywords" content="rust, rustlang, rust-lang, collections"><title>abstutil::collections - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings" ></script><script src="../../storage.js"></script><script src="../../crates.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu" role="button">☰</div><a href='../../abstutil/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a><h2 class="location">Module collections</h2><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#traits">Traits</a></li><li><a href="#functions">Functions</a></li></ul></div><div id="sidebar-vars" data-name="collections" data-ty="mod" data-relpath="./"></div><script defer src="./sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../wheel.svg"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Module <a href="../index.html">abstutil</a>::<wbr><a class="mod" href="#">collections</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></span><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/abstutil/collections.rs.html#1-392" title="goto source code">[src]</a></span></h1><h2 id="structs" class="section-header"><a href="#structs">Structs</a></h2>
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<div class="item-table"><div class="item-left module-item"><a class="struct" href="struct.Counter.html" title="abstutil::collections::Counter struct">Counter</a></div><div class="item-right docblock-short"></div><div class="item-left module-item"><a class="struct" href="struct.FixedMap.html" title="abstutil::collections::FixedMap struct">FixedMap</a></div><div class="item-right docblock-short"><p>A drop-in replacement for <code>BTreeMap</code>, where the keys have the property of being array indices.
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Some values may be missing. Much more efficient at operations on individual objects, because
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it just becomes a simple array lookup.</p>
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</div><div class="item-left module-item"><a class="struct" href="struct.MultiMap.html" title="abstutil::collections::MultiMap struct">MultiMap</a></div><div class="item-right docblock-short"></div><div class="item-left module-item"><a class="struct" href="struct.Tags.html" title="abstutil::collections::Tags struct">Tags</a></div><div class="item-right docblock-short"><p>Convenience functions around a string->string map</p>
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</div><div class="item-left module-item"><a class="struct" href="struct.VecMap.html" title="abstutil::collections::VecMap struct">VecMap</a></div><div class="item-right docblock-short"><p>Use when your key is just PartialEq, not Ord or Hash.</p>
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</div></div><h2 id="traits" class="section-header"><a href="#traits">Traits</a></h2>
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<div class="item-table"><div class="item-left module-item"><a class="trait" href="trait.IndexableKey.html" title="abstutil::collections::IndexableKey trait">IndexableKey</a></div><div class="item-right docblock-short"><p>Use with <code>FixedMap</code>. From a particular key, extract a <code>usize</code>. These values should be
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roughly contiguous; the space used by the <code>FixedMap</code> will be <code>O(n)</code> with respect to the largest
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value returned here.</p>
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</div></div><h2 id="functions" class="section-header"><a href="#functions">Functions</a></h2>
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<div class="item-table"><div class="item-left module-item"><a class="fn" href="fn.contains_duplicates.html" title="abstutil::collections::contains_duplicates fn">contains_duplicates</a></div><div class="item-right docblock-short"></div><div class="item-left module-item"><a class="fn" href="fn.wraparound_get.html" title="abstutil::collections::wraparound_get fn">wraparound_get</a></div><div class="item-right docblock-short"></div></div></section><section id="search" class="content hidden"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="abstutil" data-search-index-js="../../search-index.js" data-search-js="../../search.js"></div>
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