<!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="Use with `FixedMap`. From a particular key, extract a `usize`. These values should be roughly contiguous; the space used by the `FixedMap` will be `O(n)` with respect to the largest value returned here."><metaname="keywords"content="rust, rustlang, rust-lang, IndexableKey"><title>IndexableKey in abstutil::collections - Rust</title><linkrel="stylesheet"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../light.css"id="themeStyle"><linkrel="stylesheet"type="text/css"href="../../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../../ayu.css"disabled><scriptid="default-settings"></script><scriptsrc="../../storage.js"></script><scriptsrc="../../crates.js"></script><noscript><linkrel="stylesheet"href="../../noscript.css"></noscript><linkrel="icon"type="image/svg+xml"href="../../favicon.svg">
<linkrel="alternate icon"type="image/png"href="../../favicon-32x32.png"><styletype="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><bodyclass="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu"role="button">☰</div><ahref='../../abstutil/index.html'><divclass='logo-container rust-logo'><imgsrc='../../rust-logo.png'alt='logo'></div></a><h2class="location">Trait IndexableKey</h2><divclass="sidebar-elems"><divclass="block items"><h3class="sidebar-title"><ahref="#required-methods">Required Methods</a></h3><divclass="sidebar-links"><ahref="#tymethod.index">index</a></div><h3class="sidebar-title"><ahref="#implementors">Implementors</a></h3></div><h2class="location">Other items in<br><ahref="../index.html">abstutil</a>::<wbr><ahref="index.html">collections</a></h2><divid="sidebar-vars"data-name="IndexableKey"data-ty="trait"data-relpath=""></div><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"aria-haspopup="menu"title="themes"><imgsrc="../../brush.svg"width="18"height="18"alt="Pick another theme!"></button><divid="theme-choices"role="menu"></div></div><navclass="sub"><formclass="search-form"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"disabledautocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"></div><buttontype="button"id="help-button"title="help">?</button><aid="settings-menu"href="../../settings.html"title="settings"><imgsrc="../../wheel.svg"width="18"height="18"alt="Change settings"></a></div></form></nav><sectionid="main"class="content"><h1class="fqn"><spanclass="in-band">Trait <ahref="../index.html">abstutil</a>::<wbr><ahref="index.html">collections</a>::<wbr><aclass="trait"href="#">IndexableKey</a><buttonid="copy-path"onclick="copy_path(this)"title="copy path"><imgsrc="../../clipboard.svg"width="19"height="18"alt="Copy item import"title="Copy item import to clipboard"></button></span><spanclass="out-of-band"><spanid="render-detail"><aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass="inner">−</span>]</a></span><aclass="srclink"href="../../src/abstutil/collections.rs.html#316-318"title="goto source code">[src]</a></span></h1><divclass="docblock type-decl"><preclass="rust trait">pub trait IndexableKey {
}</pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Use with <code>FixedMap</code>. From a particular key, extract a <code>usize</code>. These values should be
