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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="A data structure that can be deserialized without borrowing any data from the deserializer."><meta name="keywords" content="rust, rustlang, rust-lang, DeserializeOwned"><title>DeserializeOwned in serde::de - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.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">&#9776;</button><a class="sidebar-logo" href="../../serde/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../serde/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">DeserializeOwned</a></h2><div class="sidebar-elems"><section><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In serde::de</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Trait <a href="../index.html">serde</a>::<wbr><a href="index.html">de</a>::<wbr><a class="trait" href="#">DeserializeOwned</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../src/serde/de/mod.rs.html#603">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="item-decl"><pre class="rust trait"><code>pub trait DeserializeOwned: for&lt;'de&gt; <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt; { }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A data structure that can be deserialized without borrowing any data from
the deserializer.</p>
<p>This is primarily useful for trait bounds on functions. For example a
<code>from_str</code> function may be able to deserialize a data structure that borrows
from the input string, but a <code>from_reader</code> function may only deserialize
owned data.</p>
<div class="example-wrap edition"><div class='tooltip' data-edition="2018"></div><pre class="rust rust-example-rendered"><code><span class="kw">fn </span>from_str&lt;<span class="lifetime">&#39;a</span>, T&gt;(s: <span class="kw-2">&amp;</span><span class="lifetime">&#39;a </span>str) -&gt; <span class="prelude-ty">Result</span>&lt;T&gt;
<span class="kw">where
</span>T: Deserialize&lt;<span class="lifetime">&#39;a</span>&gt;;
<span class="kw">fn </span>from_reader&lt;R, T&gt;(rdr: R) -&gt; <span class="prelude-ty">Result</span>&lt;T&gt;
<span class="kw">where
</span>R: Read,
T: DeserializeOwned;</code></pre></div>
<h2 id="lifetime"><a href="#lifetime">Lifetime</a></h2>
<p>The relationship between <code>Deserialize</code> and <code>DeserializeOwned</code> in trait
bounds is explained in more detail on the page <a href="https://serde.rs/lifetimes.html">Understanding deserializer
lifetimes</a>.</p>
</div></details><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div id="implementors-list"><section id="impl-DeserializeOwned-for-T" class="impl has-srclink"><a class="srclink rightside" href="../../src/serde/de/mod.rs.html#604">source</a><a href="#impl-DeserializeOwned-for-T" class="anchor"></a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="trait.DeserializeOwned.html" title="trait serde::de::DeserializeOwned">DeserializeOwned</a> for T<span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: for&lt;'de&gt; <a class="trait" href="../trait.Deserialize.html" title="trait serde::Deserialize">Deserialize</a>&lt;'de&gt;,</span></h3></section></div><script src="../../implementors/serde/de/trait.DeserializeOwned.js" async></script></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="serde" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>