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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="Provides a `Visitor` access to each entry of a map in the input."><title>MapAccess in serde::de - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-5bc39a1768837dd0.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="serde" data-themes="" data-resource-suffix="" data-rustdoc-version="1.77.0 (aedd173a2 2024-03-17)" data-channel="1.77.0" data-search-js="search-dd67cee4cfa65049.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-4c98445ec4002617.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-48f368f3872407c8.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-04d5337699b92874.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../serde/index.html">serde</a><span class="version">1.0.197</span></h2></div><h2 class="location"><a href="#">MapAccess</a></h2><div class="sidebar-elems"><section><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Error">Error</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.next_key_seed">next_key_seed</a></li><li><a href="#tymethod.next_value_seed">next_value_seed</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.next_entry">next_entry</a></li><li><a href="#method.next_entry_seed">next_entry_seed</a></li><li><a href="#method.next_key">next_key</a></li><li><a href="#method.next_value">next_value</a></li><li><a href="#method.size_hint">size_hint</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-MapAccess%3C'de%3E-for-%26mut+A">&amp;&#x27;a mut A</a></li></ul><h3><a href="#object-safety">Object Safety</a></h3><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In serde::de</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../serde/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="../index.html">serde</a>::<wbr><a href="index.html">de</a>::<wbr><a class="trait" href="#">MapAccess</a><button id="copy-path" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../../src/serde/de/mod.rs.html#1786-1889">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub trait MapAccess&lt;'de&gt; {
type <a href="#associatedtype.Error" class="associatedtype">Error</a>: <a class="trait" href="trait.Error.html" title="trait serde::de::Error">Error</a>;
// Required methods
fn <a href="#tymethod.next_key_seed" class="fn">next_key_seed</a>&lt;K&gt;(
&amp;mut self,
seed: K
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;K::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;
<span class="where">where K: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;</span>;
<span class="item-spacer"></span> fn <a href="#tymethod.next_value_seed" class="fn">next_value_seed</a>&lt;V&gt;(&amp;mut self, seed: V) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;V::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;
<span class="where">where V: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;</span>;
// Provided methods
fn <a href="#method.next_entry_seed" class="fn">next_entry_seed</a>&lt;K, V&gt;(
&amp;mut self,
kseed: K,
vseed: V
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;(K::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, V::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>)&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;
<span class="where">where K: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,
V: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;</span> { ... }
<span class="item-spacer"></span> fn <a href="#method.next_key" class="fn">next_key</a>&lt;K&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;K&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;
<span class="where">where K: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;</span> { ... }
<span class="item-spacer"></span> fn <a href="#method.next_value" class="fn">next_value</a>&lt;V&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;V, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;
<span class="where">where V: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;</span> { ... }
<span class="item-spacer"></span> fn <a href="#method.next_entry" class="fn">next_entry</a>&lt;K, V&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.tuple.html">(K, V)</a>&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;
<span class="where">where K: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,
V: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;</span> { ... }
<span class="item-spacer"></span> fn <a href="#method.size_hint" class="fn">size_hint</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>&gt; { ... }
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Provides a <code>Visitor</code> access to each entry of a map in the input.</p>
<p>This is a trait that a <code>Deserializer</code> passes to a <code>Visitor</code> implementation.</p>
<h2 id="lifetime"><a class="doc-anchor" href="#lifetime">§</a>Lifetime</h2>
<p>The <code>'de</code> lifetime of this trait is the lifetime of data that may be
borrowed by deserialized map entries. See the page <a href="https://serde.rs/lifetimes.html">Understanding
deserializer lifetimes</a> for a more detailed explanation of these lifetimes.</p>
<h2 id="example-implementation"><a class="doc-anchor" href="#example-implementation">§</a>Example implementation</h2>
<p>The <a href="https://serde.rs/data-format.html">example data format</a> presented on the website demonstrates an
implementation of <code>MapAccess</code> for a basic JSON data format.</p>
</div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.Error" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1789">source</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a>: <a class="trait" href="trait.Error.html" title="trait serde::de::Error">Error</a></h4></section></summary><div class="docblock"><p>The error type that can be returned if some error occurs during
deserialization.</p>
</div></details></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.next_key_seed" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1796-1798">source</a><h4 class="code-header">fn <a href="#tymethod.next_key_seed" class="fn">next_key_seed</a>&lt;K&gt;(&amp;mut self, seed: K) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;K::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,</div></h4></section></summary><div class="docblock"><p>This returns <code>Ok(Some(key))</code> for the next key in the map, or <code>Ok(None)</code>
if there are no more remaining entries.</p>
<p><code>Deserialize</code> implementations should typically use
<code>MapAccess::next_key</code> or <code>MapAccess::next_entry</code> instead.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.next_value_seed" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1809-1811">source</a><h4 class="code-header">fn <a href="#tymethod.next_value_seed" class="fn">next_value_seed</a>&lt;V&gt;(&amp;mut self, seed: V) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;V::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
V: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,</div></h4></section></summary><div class="docblock"><p>This returns a <code>Ok(value)</code> for the next value in the map.</p>
<p><code>Deserialize</code> implementations should typically use
<code>MapAccess::next_value</code> instead.</p>
<h5 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h5>
<p>Calling <code>next_value_seed</code> before <code>next_key_seed</code> is incorrect and is
allowed to panic or return bogus results.</p>
</div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.next_entry_seed" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1822-1838">source</a><h4 class="code-header">fn <a href="#method.next_entry_seed" class="fn">next_entry_seed</a>&lt;K, V&gt;(
&amp;mut self,
kseed: K,
vseed: V
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;(K::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, V::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>)&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,
V: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,</div></h4></section></summary><div class="docblock"><p>This returns <code>Ok(Some((key, value)))</code> for the next (key-value) pair in
the map, or <code>Ok(None)</code> if there are no more remaining items.</p>
<p><code>MapAccess</code> implementations should override the default behavior if a
more efficient implementation is possible.</p>
<p><code>Deserialize</code> implementations should typically use
<code>MapAccess::next_entry</code> instead.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.next_key" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1846-1851">source</a><h4 class="code-header">fn <a href="#method.next_key" class="fn">next_key</a>&lt;K&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;K&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</div></h4></section></summary><div class="docblock"><p>This returns <code>Ok(Some(key))</code> for the next key in the map, or <code>Ok(None)</code>
if there are no more remaining entries.</p>
<p>This method exists as a convenience for <code>Deserialize</code> implementations.
<code>MapAccess</code> implementations should not override the default behavior.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.next_value" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1863-1868">source</a><h4 class="code-header">fn <a href="#method.next_value" class="fn">next_value</a>&lt;V&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;V, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
V: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</div></h4></section></summary><div class="docblock"><p>This returns a <code>Ok(value)</code> for the next value in the map.</p>
<p>This method exists as a convenience for <code>Deserialize</code> implementations.
<code>MapAccess</code> implementations should not override the default behavior.</p>
<h5 id="panics-1"><a class="doc-anchor" href="#panics-1">§</a>Panics</h5>
<p>Calling <code>next_value</code> before <code>next_key</code> is incorrect and is allowed to
panic or return bogus results.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.next_entry" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1876-1882">source</a><h4 class="code-header">fn <a href="#method.next_entry" class="fn">next_entry</a>&lt;K, V&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.tuple.html">(K, V)</a>&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,
V: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</div></h4></section></summary><div class="docblock"><p>This returns <code>Ok(Some((key, value)))</code> for the next (key-value) pair in
the map, or <code>Ok(None)</code> if there are no more remaining items.</p>
<p>This method exists as a convenience for <code>Deserialize</code> implementations.
<code>MapAccess</code> implementations should not override the default behavior.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.size_hint" class="method"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1886-1888">source</a><h4 class="code-header">fn <a href="#method.size_hint" class="fn">size_hint</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>&gt;</h4></section></summary><div class="docblock"><p>Returns the number of entries remaining in the map, if known.</p>
</div></details></div><h2 id="object-safety" class="section-header">Object Safety<a href="#object-safety" class="anchor">§</a></h2><div class="object-safety-info">This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.77.0/reference/items/traits.html#object-safety">object safe</a>.</div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-MapAccess%3C'de%3E-for-%26mut+A" class="impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1891-1955">source</a><a href="#impl-MapAccess%3C'de%3E-for-%26mut+A" class="anchor">§</a><h3 class="code-header">impl&lt;'de, 'a, A&gt; <a class="trait" href="trait.MapAccess.html" title="trait serde::de::MapAccess">MapAccess</a>&lt;'de&gt; for <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.reference.html">&amp;'a mut A</a><div class="where">where
A: <a class="trait" href="trait.MapAccess.html" title="trait serde::de::MapAccess">MapAccess</a>&lt;'de&gt; + ?<a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = &lt;A as <a class="trait" href="trait.MapAccess.html" title="trait serde::de::MapAccess">MapAccess</a>&lt;'de&gt;&gt;::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a></h4></section><section id="method.next_key_seed" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1898-1903">source</a><a href="#method.next_key_seed" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.next_key_seed" class="fn">next_key_seed</a>&lt;K&gt;(&amp;mut self, seed: K) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;K::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,</div></h4></section><section id="method.next_value_seed" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1906-1911">source</a><a href="#method.next_value_seed" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.next_value_seed" class="fn">next_value_seed</a>&lt;V&gt;(&amp;mut self, seed: V) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;V::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
V: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,</div></h4></section><section id="method.next_entry_seed-1" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1914-1924">source</a><a href="#method.next_entry_seed-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.next_entry_seed" class="fn">next_entry_seed</a>&lt;K, V&gt;(
&amp;mut self,
kseed: K,
vseed: V
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;(K::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>, V::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type serde::de::DeserializeSeed::Value">Value</a>)&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,
V: <a class="trait" href="trait.DeserializeSeed.html" title="trait serde::de::DeserializeSeed">DeserializeSeed</a>&lt;'de&gt;,</div></h4></section><section id="method.next_entry-1" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1927-1933">source</a><a href="#method.next_entry-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.next_entry" class="fn">next_entry</a>&lt;K, V&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.tuple.html">(K, V)</a>&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,
V: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</div></h4></section><section id="method.next_key-1" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1936-1941">source</a><a href="#method.next_key-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.next_key" class="fn">next_key</a>&lt;K&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;K&gt;, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
K: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</div></h4></section><section id="method.next_value-1" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1944-1949">source</a><a href="#method.next_value-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.next_value" class="fn">next_value</a>&lt;V&gt;(&amp;mut self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;V, Self::<a class="associatedtype" href="trait.MapAccess.html#associatedtype.Error" title="type serde::de::MapAccess::Error">Error</a>&gt;<div class="where">where
V: <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</div></h4></section><section id="method.size_hint-1" class="method trait-impl"><a class="src rightside" href="../../src/serde/de/mod.rs.html#1952-1954">source</a><a href="#method.size_hint-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.size_hint" class="fn">size_hint</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>&gt;</h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><details class="toggle implementors-toggle"><summary><section id="impl-MapAccess%3C'de%3E-for-MapDeserializer%3C'de,+I,+E%3E" class="impl"><a class="src rightside" href="../../src/serde/de/value.rs.html#1200-1256">source</a><a href="#impl-MapAccess%3C'de%3E-for-MapDeserializer%3C'de,+I,+E%3E" class="anchor">§</a><h3 class="code-header">impl&lt;'de, I, E&gt; <a class="trait" href="trait.MapAccess.html" title="trait serde::de::MapAccess">MapAccess</a>&lt;'de&gt; for <a class="struct" href="value/struct.MapDeserializer.html" title="struct serde::de::value::MapDeserializer">MapDeserializer</a>&lt;'de, I, E&gt;<div class="where">where
I: <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>,
I::<a class="associatedtype" href="https://doc.rust-lang.org/1.77.0/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a>: Pair,
&lt;I::<a class="associatedtype" href="https://doc.rust-lang.org/1.77.0/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a> as Pair&gt;::First: <a class="trait" href="trait.IntoDeserializer.html" title="trait serde::de::IntoDeserializer">IntoDeserializer</a>&lt;'de, E&gt;,
&lt;I::<a class="associatedtype" href="https://doc.rust-lang.org/1.77.0/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a> as Pair&gt;::Second: <a class="trait" href="trait.IntoDeserializer.html" title="trait serde::de::IntoDeserializer">IntoDeserializer</a>&lt;'de, E&gt;,
E: <a class="trait" href="trait.Error.html" title="trait serde::de::Error">Error</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Error-2" class="associatedtype trait-impl"><a href="#associatedtype.Error-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = E</h4></section></div></details></div><script src="../../trait.impl/serde/de/trait.MapAccess.js" async></script></section></div></main></body></html>