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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 `map` mod in crate `serde_json`."><meta name="keywords" content="rust, rustlang, rust-lang, map"><title>serde_json::map - 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 mod"><!--[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">&#9776;</div><a href='../../serde_json/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Module map</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li></ul></div><p class='location'><a href='../index.html'>serde_json</a></p><script>window.sidebarCurrent = {name: 'map', ty: 'mod', 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'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/serde_json/map.rs.html#1-814' title='goto source code'>[src]</a></span><span class='in-band'>Module <a href='../index.html'>serde_json</a>::<wbr><a class="mod" href=''>map</a></span></h1><div class='docblock'><p>A map of String to serde_json::Value.</p>
<p>By default the map is backed by a <a href="https://doc.rust-lang.org/std/collections/struct.BTreeMap.html"><code>BTreeMap</code></a>. Enable the <code>preserve_order</code>
feature of serde_json to use <a href="https://docs.rs/indexmap/*/indexmap/map/struct.IndexMap.html"><code>IndexMap</code></a> instead.</p>
</div><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
<table><tr class='module-item'><td><a class="struct" href="struct.IntoIter.html" title='serde_json::map::IntoIter struct'>IntoIter</a></td><td class='docblock-short'><p>An owning iterator over a serde_json::Map's entries.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.Iter.html" title='serde_json::map::Iter struct'>Iter</a></td><td class='docblock-short'><p>An iterator over a serde_json::Map's entries.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.IterMut.html" title='serde_json::map::IterMut struct'>IterMut</a></td><td class='docblock-short'><p>A mutable iterator over a serde_json::Map's entries.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.Keys.html" title='serde_json::map::Keys struct'>Keys</a></td><td class='docblock-short'><p>An iterator over a serde_json::Map's keys.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.Map.html" title='serde_json::map::Map struct'>Map</a></td><td class='docblock-short'><p>Represents a JSON key/value type.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.OccupiedEntry.html" title='serde_json::map::OccupiedEntry struct'>OccupiedEntry</a></td><td class='docblock-short'><p>An occupied Entry. It is part of the <a href="enum.Entry.html"><code>Entry</code></a> enum.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.VacantEntry.html" title='serde_json::map::VacantEntry struct'>VacantEntry</a></td><td class='docblock-short'><p>A vacant Entry. It is part of the <a href="enum.Entry.html"><code>Entry</code></a> enum.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.Values.html" title='serde_json::map::Values struct'>Values</a></td><td class='docblock-short'><p>An iterator over a serde_json::Map's values.</p>
</td></tr><tr class='module-item'><td><a class="struct" href="struct.ValuesMut.html" title='serde_json::map::ValuesMut struct'>ValuesMut</a></td><td class='docblock-short'><p>A mutable iterator over a serde_json::Map's values.</p>
</td></tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
<table><tr class='module-item'><td><a class="enum" href="enum.Entry.html" title='serde_json::map::Entry enum'>Entry</a></td><td class='docblock-short'><p>A view into a single entry in a map, which may either be vacant or occupied.
This enum is constructed from the <a href="struct.Map.html#method.entry"><code>entry</code></a> method on <a href="struct.Map.html"><code>Map</code></a>.</p>
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