<!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="Serializes a `usize` as a `u32` to save space. Useful when you need `usize` for indexing, but the values don’t exceed 2^32."><metaname="keywords"content="rust, rustlang, rust-lang, serialize_usize"><title>serialize_usize in abstutil::serde - Rust</title><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceSerif4-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../FiraSans-Regular.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../FiraSans-Medium.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceCodePro-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceSerif4-Bold.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceCodePro-Semibold.ttf.woff2"><linkrel="stylesheet"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../ayu.css"disabled><linkrel="stylesheet"type="text/css"href="../../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../../light.css"id="themeStyle"><scriptid="default-settings"></script><scriptsrc="../../storage.js"></script><scriptsrc="../../crates.js"></script><scriptdefersrc="../../main.js"></script>
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</a><divclass="sidebar-elems"><h2class="location">Other items in<br><ahref="../index.html">abstutil</a>::<wbr><ahref="index.html">serde</a></h2><divid="sidebar-vars"data-name="serialize_usize"data-ty="fn"data-relpath=""></div><scriptdefersrc="sidebar-items.js"></script></div></nav><main><divclass="width-limiter"><divclass="sub-container"><aclass="sub-logo-container"href="../../abstutil/index.html"><imgclass="rust-logo"src="../../rust-logo.png"alt="logo"></a><navclass="sub"><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"aria-haspopup="menu"title="themes"><imgwidth="18"height="18"alt="Pick another theme!"src="../../brush.svg"></button><divid="theme-choices"role="menu"></div></div><formclass="search-form"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"autocomplete="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"><imgwidth="18"height="18"alt="Change settings"src="../../wheel.svg"></a></div></form></nav></div><sectionid="main-content"class="content"><h1class="fqn"><spanclass="in-band">Function <ahref="../index.html">abstutil</a>::<wbr><ahref="index.html">serde</a>::<wbr><aclass="fn"href="#">serialize_usize</a><buttonid="copy-path"onclick="copy_path(this)"title="Copy item path to clipboard"><imgsrc="../../clipboard.svg"width="19"height="18"alt="Copy item path"></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/serde.rs.html#139-145"title="goto source code">[src]</a></span></h1><divclass="docblock item-decl"><preclass="rust fn"><code>pub fn serialize_usize<S: <aclass="trait"href="https://docs.rs/serde/1.0.126/serde/ser/trait.Serializer.html"title="trait serde::ser::Serializer">Serializer</a>>(<br> x: &<aclass="primitive"href="https://doc.rust-lang.org/1.59.0/std/primitive.usize.html">usize</a>, <br> s: S<br>) -><aclass="type"href="https://docs.rs/anyhow/1.0.41/anyhow/type.Result.html"title="type anyhow::Result">Result</a><S::<aclass="associatedtype"href="https://docs.rs/serde/1.0.126/serde/ser/trait.Serializer.html#associatedtype.Ok"title="type serde::ser::Serializer::Ok">Ok</a>, S::<aclass="associatedtype"href="https://docs.rs/serde/1.0.126/serde/ser/trait.Serializer.html#associatedtype.Error"title="type serde::ser::Serializer::Error">Error</a>></code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Serializes a <code>usize</code> as a <code>u32</code> to save space. Useful when you need <code>usize</code> for indexing, but
