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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 `MapAccess` trait in crate `serde`."><meta name="keywords" content="rust, rustlang, rust-lang, MapAccess"><title>serde::de::MapAccess - 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 trait"><!--[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">☰</div><a href='../../serde/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Trait MapAccess</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#associated-types">Associated Types</a><div class="sidebar-links"><a href="#associatedtype.Error">Error</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.next_key_seed">next_key_seed</a><a href="#tymethod.next_value_seed">next_value_seed</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.next_entry">next_entry</a><a href="#method.next_entry_seed">next_entry_seed</a><a href="#method.next_key">next_key</a><a href="#method.next_value">next_value</a><a href="#method.size_hint">size_hint</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-MapAccess%3C%27de%3E-for-%26%27a%20mut%20A">&'a mut A</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>serde</a>::<wbr><a href='index.html'>de</a></p><script>window.sidebarCurrent = {name: 'MapAccess', ty: 'trait', 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'>−</span>]</a></span><a class='srclink' href='../../src/serde/de/mod.rs.html#1759-1862' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../index.html'>serde</a>::<wbr><a href='index.html'>de</a>::<wbr><a class="trait" href=''>MapAccess</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait MapAccess<'de> {
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type <a href='#associatedtype.Error' class="type">Error</a>: <a class="trait" href="../../serde/de/trait.Error.html" title="trait serde::de::Error">Error</a>;
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fn <a href='#tymethod.next_key_seed' class='fnname'>next_key_seed</a><K>(<br> &mut self, <br> seed: K<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><K::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>><br> <span class="where">where<br> K: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.next_value_seed' class='fnname'>next_value_seed</a><V>(&mut self, seed: V) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>><br> <span class="where">where<br> V: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de></span>;
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fn <a href='#method.next_entry_seed' class='fnname'>next_entry_seed</a><K, V>(<br> &mut self, <br> kseed: K, <br> vseed: V<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>K::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, V::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>><br> <span class="where">where<br> K: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>,<br> V: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de></span>,
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{ ... }
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<div class='item-spacer'></div> fn <a href='#method.next_key' class='fnname'>next_key</a><K>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><K>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>><br> <span class="where">where<br> K: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de></span>,
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{ ... }
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<div class='item-spacer'></div> fn <a href='#method.next_value' class='fnname'>next_value</a><V>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>><br> <span class="where">where<br> V: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de></span>,
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{ ... }
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<div class='item-spacer'></div> fn <a href='#method.next_entry' class='fnname'>next_entry</a><K, V>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>K, V<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>><br> <span class="where">where<br> K: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>,<br> V: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de></span>,
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{ ... }
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<div class='item-spacer'></div> fn <a href='#method.size_hint' class='fnname'>size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>> { ... }
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}</pre></div><div class='docblock'><p>Provides a <code>Visitor</code> access to each entry of a map in the input.</p>
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<p>This is a trait that a <code>Deserializer</code> passes to a <code>Visitor</code> implementation.</p>
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<h1 id="lifetime" class="section-header"><a href="#lifetime">Lifetime</a></h1>
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<p>The <code>'de</code> lifetime of this trait is the lifetime of data that may be
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borrowed by deserialized map entries. See the page <a href="https://serde.rs/lifetimes.html">Understanding
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deserializer lifetimes</a> for a more detailed explanation of these lifetimes.</p>
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<h1 id="example-implementation" class="section-header"><a href="#example-implementation">Example implementation</a></h1>
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<p>The <a href="https://serde.rs/data-format.html">example data format</a> presented on the website demonstrates an
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implementation of <code>MapAccess</code> for a basic JSON data format.</p>
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</div>
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<h2 id='associated-types' class='small-section-header'>Associated Types<a href='#associated-types' class='anchor'></a></h2><div class='methods'><h3 id='associatedtype.Error' class='method'><code id='Error.t'>type <a href='#associatedtype.Error' class="type">Error</a>: <a class="trait" href="../../serde/de/trait.Error.html" title="trait serde::de::Error">Error</a></code></h3><div class='docblock'><p>The error type that can be returned if some error occurs during
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deserialization.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.next_key_seed' class='method'><code id='next_key_seed.v'>fn <a href='#tymethod.next_key_seed' class='fnname'>next_key_seed</a><K>(&mut self, seed: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><K::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code></h3><div class='docblock'><p>This returns <code>Ok(Some(key))</code> for the next key in the map, or <code>Ok(None)</code>
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if there are no more remaining entries.</p>
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<p><code>Deserialize</code> implementations should typically use
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<code>MapAccess::next_key</code> or <code>MapAccess::next_entry</code> instead.</p>
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</div><h3 id='tymethod.next_value_seed' class='method'><code id='next_value_seed.v'>fn <a href='#tymethod.next_value_seed' class='fnname'>next_value_seed</a><V>(&mut self, seed: V) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> V: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code></h3><div class='docblock'><p>This returns a <code>Ok(value)</code> for the next value in the map.</p>
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<p><code>Deserialize</code> implementations should typically use
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<code>MapAccess::next_value</code> instead.</p>
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<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
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<p>Calling <code>next_value_seed</code> before <code>next_key_seed</code> is incorrect and is
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allowed to panic or return bogus results.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='provided-methods' class='small-section-header'>Provided methods<a href='#provided-methods' class='anchor'></a></h2><div class='methods'><h3 id='method.next_entry_seed' class='method'><code id='next_entry_seed.v'>fn <a href='#method.next_entry_seed' class='fnname'>next_entry_seed</a><K, V>(<br> &mut self, <br> kseed: K, <br> vseed: V<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>K::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, V::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>,<br> V: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code></h3><div class='docblock'><p>This returns <code>Ok(Some((key, value)))</code> for the next (key-value) pair in
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the map, or <code>Ok(None)</code> if there are no more remaining items.</p>
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<p><code>MapAccess</code> implementations should override the default behavior if a
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more efficient implementation is possible.</p>
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<p><code>Deserialize</code> implementations should typically use
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<code>MapAccess::next_entry</code> instead.</p>
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</div><h3 id='method.next_key' class='method'><code id='next_key.v'>fn <a href='#method.next_key' class='fnname'>next_key</a><K>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><K>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>, </span></code></h3><div class='docblock'><p>This returns <code>Ok(Some(key))</code> for the next key in the map, or <code>Ok(None)</code>
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if there are no more remaining entries.</p>
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<p>This method exists as a convenience for <code>Deserialize</code> implementations.
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<code>MapAccess</code> implementations should not override the default behavior.</p>
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</div><h3 id='method.next_value' class='method'><code id='next_value.v'>fn <a href='#method.next_value' class='fnname'>next_value</a><V>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> V: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>, </span></code></h3><div class='docblock'><p>This returns a <code>Ok(value)</code> for the next value in the map.</p>
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<p>This method exists as a convenience for <code>Deserialize</code> implementations.
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<code>MapAccess</code> implementations should not override the default behavior.</p>
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<h1 id="panics-1" class="section-header"><a href="#panics-1">Panics</a></h1>
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<p>Calling <code>next_value</code> before <code>next_key</code> is incorrect and is allowed to
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panic or return bogus results.</p>
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</div><h3 id='method.next_entry' class='method'><code id='next_entry.v'>fn <a href='#method.next_entry' class='fnname'>next_entry</a><K, V>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>K, V<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>,<br> V: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>, </span></code></h3><div class='docblock'><p>This returns <code>Ok(Some((key, value)))</code> for the next (key-value) pair in
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the map, or <code>Ok(None)</code> if there are no more remaining items.</p>
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<p>This method exists as a convenience for <code>Deserialize</code> implementations.
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<code>MapAccess</code> implementations should not override the default behavior.</p>
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</div><h3 id='method.size_hint' class='method'><code id='size_hint.v'>fn <a href='#method.size_hint' class='fnname'>size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>></code></h3><div class='docblock'><p>Returns the number of entries remaining in the map, if known.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='foreign-impls' class='small-section-header'>Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a></h2><h3 id='impl-MapAccess%3C%27de%3E-for-%26%27a%20mut%20A' class='impl'><code class='in-band'>impl<'de, 'a, A> <a class="trait" href="../../serde/de/trait.MapAccess.html" title="trait serde::de::MapAccess">MapAccess</a><'de> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&'a mut </a>A <span class="where fmt-newline">where<br> A: <a class="trait" href="../../serde/de/trait.MapAccess.html" title="trait serde::de::MapAccess">MapAccess</a><'de>, </span></code><a href='#impl-MapAccess%3C%27de%3E-for-%26%27a%20mut%20A' class='anchor'></a><a class='srclink' href='../../src/serde/de/mod.rs.html#1864-1928' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='#associatedtype.Error' class="type">Error</a> = A::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a></code></h4><h4 id='method.next_key_seed' class="method hidden"><code id='next_key_seed.v-1'>fn <a href='#method.next_key_seed' class='fnname'>next_key_seed</a><K>(&mut self, seed: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><K::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1871-1876' title='goto source code'>[src]</a></h4><h4 id='method.next_value_seed' class="method hidden"><code id='next_value_seed.v-1'>fn <a href='#method.next_value_seed' class='fnname'>next_value_seed</a><V>(&mut self, seed: V) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> V: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1879-1884' title='goto source code'>[src]</a></h4><h4 id='method.next_entry_seed-1' class="method hidden"><code id='next_entry_seed.v-1'>fn <a href='#method.next_entry_seed' class='fnname'>next_entry_seed</a><K, V>(<br> &mut self, <br> kseed: K, <br> vseed: V<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>K::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, V::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>,<br> V: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1887-1897' title='goto source code'>[src]</a></h4><h4 id='method.next_entry-1' class="method hidden"><code id='next_entry.v-1'>fn <a href='#method.next_entry' class='fnname'>next_entry</a><K, V>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>K, V<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>,<br> V: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1900-1906' title='goto source code'>[src]</a></h4><h4 id='method.next_key-1' class="method hidden"><code id='next_key.v-1'>fn <a href='#method.next_key' class='fnname'>next_key</a><K>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><K>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> K: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1909-1914' title='goto source code'>[src]</a></h4><h4 id='method.next_value-1' class="method hidden"><code id='next_value.v-1'>fn <a href='#method.next_value' class='fnname'>next_value</a><V>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> V: <a class="trait" href="../../serde/trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1917-1922' title='goto source code'>[src]</a></h4><h4 id='method.size_hint-1' class="method hidden"><code id='size_hint.v-1'>fn <a href='#method.size_hint' class='fnname'>size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>></code><a class='srclink' href='../../src/serde/de/mod.rs.html#1925-1927' title='goto source code'>[src]</a></h4></div><span class='loading-content'>Loading content...</span>
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<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-MapAccess%3C%27de%3E' class='impl'><code class='in-band'>impl<'de, I, E> MapAccess<'de> for <a class="struct" href="../../serde/de/value/struct.MapDeserializer.html" title="struct serde::de::value::MapDeserializer">MapDeserializer</a><'de, I, E> <span class="where fmt-newline">where<br> I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>,<br> I::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a>: Pair,<br> <I::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a> as Pair>::First: <a class="trait" href="../../serde/de/trait.IntoDeserializer.html" title="trait serde::de::IntoDeserializer">IntoDeserializer</a><'de, E>,<br> <I::<a class="type" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a> as Pair>::Second: <a class="trait" href="../../serde/de/trait.IntoDeserializer.html" title="trait serde::de::IntoDeserializer">IntoDeserializer</a><'de, E>,<br> E: <a class="trait" href="../../serde/de/trait.Error.html" title="trait serde::de::Error">Error</a>, </span></code><a href='#impl-MapAccess%3C%27de%3E' class='anchor'></a><a class='srclink' href='../../src/serde/de/value.rs.html#1007-1063' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-2' class="type"><code id='Error.t-2'>type <a href='#associatedtype.Error-2' class="type">Error</a> = E</code></h4><h4 id='method.next_key_seed-1' class="method hidden"><code id='next_key_seed.v-2'>fn <a href='#method.next_key_seed-1' class='fnname'>next_key_seed</a><T>(&mut self, seed: T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><T::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/value.rs.html#1017-1028' title='goto source code'>[src]</a></h4><h4 id='method.next_value_seed-1' class="method hidden"><code id='next_value_seed.v-2'>fn <a href='#method.next_value_seed-1' class='fnname'>next_value_seed</a><T>(&mut self, seed: T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/value.rs.html#1030-1039' title='goto source code'>[src]</a></h4><h4 id='method.next_entry_seed-2' class="method hidden"><code id='next_entry_seed.v-2'>fn <a href='#method.next_entry_seed-2' class='fnname'>next_entry_seed</a><TK, TV>(<br> &mut self, <br> kseed: TK, <br> vseed: TV<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a>TK::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, TV::<a class="type" href="../../serde/de/trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>>, Self::<a class="type" href="../../serde/de/trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>> <span class="where fmt-newline">where<br> TK: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>,<br> TV: <a class="trait" href="../../serde/de/trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a><'de>, </span></code><a class='srclink' href='../../src/serde/de/value.rs.html#1041-1058' title='goto source code'>[src]</a></h4><h4 id='method.size_hint-2' class="method hidden"><code id='size_hint.v-2'>fn <a href='#method.size_hint-2' class='fnname'>size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>></code><a class='srclink' 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