<!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="Generic data structure deserialization framework."><title>serde::de - Rust</title><script>if(window.location.protocol!=="file:")document.write(`<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">`)</script><linkrel="stylesheet"href="../../static.files/normalize-76eba96aa4d2e634.css"><linkrel="stylesheet"href="../../static.files/rustdoc-e935ef01ae1c1829.css"><metaname="rustdoc-vars"data-root-path="../../"data-static-root-path="../../static.files/"data-current-crate="serde"data-themes=""data-resource-suffix=""data-rustdoc-version="1.78.0 (9b00956e5 2024-04-29)"data-channel="1.78.0"data-search-js="search-42d8da7a6b9792c2.js"data-settings-js="settings-4313503d2e1961c2.js"><scriptsrc="../../static.files/storage-4c98445ec4002617.js"></script><scriptdefersrc="../sidebar-items.js"></script><scriptdefersrc="../../static.files/main-12cf3b4f4f9dc36d.js"></script><noscript><linkrel="stylesheet"href="../../static.files/noscript-04d5337699b92874.css"></noscript><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-32x32-422f7d1d52889060.png"><linkrel="icon"type="image/svg+xml"href="../../static.files/favicon-2c020d218678b618.svg"></head><bodyclass="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle"title="show sidebar"></button></nav><navclass="sidebar"><divclass="sidebar-crate"><h2><ahref="../../serde/index.html">serde</a><spanclass="version">1.0.200</span></h2></div><h2class="location"><ahref="#">Module de</a></h2><divclass="sidebar-elems"><section><ulclass="block"><li><ahref="#reexports">Re-exports</a></li><li><ahref="#modules">Modules</a></li><li><ahref="#structs">Structs</a></li><li><ahref="#enums">Enums</a></li><li><ahref="#traits">Traits</a></li></ul></section><h2><ahref="../index.html">In crate serde</a></h2></div></nav><divclass="sidebar-resizer"></div>
<main><divclass="width-limiter"><navclass="sub"><formclass="search-form"><span></span><divid="sidebar-button"tabindex="-1"><ahref="../../serde/all.html"title="show sidebar"></a></div><inputclass="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"><divid="help-button"tabindex="-1"><ahref="../../help.html"title="help">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><sectionid="main-content"class="content"><divclass="main-heading"><h1>Module <ahref="../index.html">serde</a>::<wbr><aclass="mod"href="#">de</a><buttonid="copy-path"title="Copy item path to clipboard"><imgsrc="../../static.files/clipboard-7571035ce49a181d.svg"width="19"height="18"alt="Copy item path"></button></h1><spanclass="out-of-band"><aclass="src"href="../../src/serde/de/mod.rs.html#1-2329">source</a> · <buttonid="toggle-all-docs"title="collapse all docs">[<span>−</span>]</button></span></div><detailsclass="toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Generic data structure deserialization framework.</p>
<p>Serde provides <ahref="../trait.Deserialize.html"><code>Deserialize</code></a> implementations for many Rust primitive and
standard library types. The complete list is below. All of these can be
deserialized using Serde out of the box.</p>
<p>Additionally, Serde provides a procedural macro called <ahref="https://crates.io/crates/serde_derive"><code>serde_derive</code></a> to
automatically generate <ahref="../trait.Deserialize.html"><code>Deserialize</code></a> implementations for structs and enums
in your program. See the <ahref="https://serde.rs/derive.html">derive section of the manual</a> for how to use this.</p>
<p>In rare cases it may be necessary to implement <ahref="../trait.Deserialize.html"><code>Deserialize</code></a> manually for
some type in your program. See the <ahref="https://serde.rs/impl-deserialize.html">Implementing <code>Deserialize</code></a> section of
the manual for more about this.</p>
<p>Third-party crates may provide <ahref="../trait.Deserialize.html"><code>Deserialize</code></a> implementations for types
that they expose. For example the <ahref="https://crates.io/crates/linked-hash-map"><code>linked-hash-map</code></a> crate provides a
<ahref="https://docs.rs/linked-hash-map/*/linked_hash_map/struct.LinkedHashMap.html"><code>LinkedHashMap<K, V></code></a> type that is deserializable by Serde because the
crate provides an implementation of <ahref="../trait.Deserialize.html"><code>Deserialize</code></a> for it.</p>
<p><ahref="../trait.Deserializer.html"><code>Deserializer</code></a> implementations are provided by third-party crates, for
example <ahref="https://github.com/serde-rs/json"><code>serde_json</code></a>, <ahref="https://github.com/dtolnay/serde-yaml"><code>serde_yaml</code></a> and <ahref="https://github.com/jamesmunns/postcard"><code>postcard</code></a>.</p>
<p>A partial list of well-maintained formats is given on the <ahref="https://serde.rs/#data-formats">Serde
<h2id="implementations-of-deserialize-provided-by-serde"><aclass="doc-anchor"href="#implementations-of-deserialize-provided-by-serde">§</a>Implementations of Deserialize provided by Serde</h2>
</div></details><h2id="reexports"class="section-header">Re-exports<ahref="#reexports"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"id="reexport.StdError"><code>pub use std::error::<aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/error/trait.Error.html"title="trait core::error::Error">Error</a> as StdError;</code></div></li></ul><h2id="modules"class="section-header">Modules<ahref="#modules"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="mod"href="value/index.html"title="mod serde::de::value">value</a></div><divclass="desc docblock-short">Building blocks for deserializing basic values using the <code>IntoDeserializer</code>
trait.</div></li></ul><h2id="structs"class="section-header">Structs<ahref="#structs"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="struct"href="struct.IgnoredAny.html"title="struct serde::de::IgnoredAny">IgnoredAny</a></div><divclass="desc docblock-short">An efficient way of discarding data from a deserializer.</div></li></ul><h2id="enums"class="section-header">Enums<ahref="#enums"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="enum"href="enum.Unexpected.html"title="enum serde::de::Unexpected">Unexpected</a></div><divclass="desc docblock-short"><code>Unexpected</code> represents an unexpected invocation of any one of the <code>Visitor</code>
trait methods.</div></li></ul><h2id="traits"class="section-header">Traits<ahref="#traits"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="trait"href="trait.Deserialize.html"title="trait serde::de::Deserialize">Deserialize</a></div><divclass="desc docblock-short">A <strong>data structure</strong> that can be deserialized from any data format supported
by Serde.</div></li><li><divclass="item-name"><aclass="trait"href="trait.DeserializeOwned.html"title="trait serde::de::DeserializeOwned">DeserializeOwned</a></div><divclass="desc docblock-short">A data structure that can be deserialized without borrowing any data from
the deserializer.</div></li><li><divclass="item-name"><aclass="trait"href="trait.DeserializeSeed.html"title="trait serde::de::DeserializeSeed">DeserializeSeed</a></div><divclass="desc docblock-short"><code>DeserializeSeed</code> is the stateful form of the <code>Deserialize</code> trait. If you
ever find yourself looking for a way to pass data into a <code>Deserialize</code> impl,
this trait is the way to do it.</div></li><li><divclass="item-name"><aclass="trait"href="trait.Deserializer.html"title="trait serde::de::Deserializer">Deserializer</a></div><divclass="desc docblock-short">A <strong>data format</strong> that can deserialize any data structure supported by
Serde.</div></li><li><divclass="item-name"><aclass="trait"href="trait.EnumAccess.html"title="trait serde::de::EnumAccess">EnumAccess</a></div><divclass="desc docblock-short">Provides a <code>Visitor</code> access to the data of an enum in the input.</div></li><li><divclass="item-name"><aclass="trait"href="trait.Error.html"title="trait serde::de::Error">Error</a></div><divclass="desc docblock-short">The <code>Error</code> trait allows <code>Deserialize</code> implementations to create descriptive
error messages belonging to the <code>Deserializer</code> against which they are
currently running.</div></li><li><divclass="item-name"><aclass="trait"href="trait.Expected.html"title="trait serde::de::Expected">Expected</a></div><divclass="desc docblock-short"><code>Expected</code> represents an explanation of what data a <code>Visitor</code> was expecting
to receive.</div></li><li><divclass="item-name"><aclass="trait"href="trait.IntoDeserializer.html"title="trait serde::de::IntoDeserializer">IntoDeserializer</a></div><divclass="desc docblock-short">Converts an existing value into a <code>Deserializer</code> from which other values can
be deserialized.</div></li><li><divclass="item-name"><aclass="trait"href="trait.MapAccess.html"title="trait serde::de::MapAccess">MapAccess</a></div><divclass="desc docblock-short">Provides a <code>Visitor</code> access to each entry of a map in the input.</div></li><li><divclass="item-name"><aclass="trait"href="trait.SeqAccess.html"title="trait serde::de::SeqAccess">SeqAccess</a></div><divclass="desc docblock-short">Provides a <code>Visitor</code> access to each element of a sequence in the input.</div></li><li><divclass="item-name"><aclass="trait"href="trait.VariantAccess.html"title="trait serde::de::VariantAccess">VariantAccess</a></div><divclass="desc docblock-short"><code>VariantAccess</code> is a visitor that is created by the <code>Deserializer</code> and
passed to the <code>Deserialize</code> to deserialize the content of a particular enum
variant.</div></li><li><divclass="item-name"><aclass="trait"href="trait.Visitor.html"title="trait serde::de::Visitor">Visitor</a></div><divclass="desc docblock-short">This trait represents a visitor that walks through a deserializer.</div></li></ul></section></div></main></body></html>
