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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 `deserialize` fn in crate `erased_serde`."><meta name="keywords" content="rust, rustlang, rust-lang, deserialize"><title>erased_serde::deserialize - 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 fn"><!--[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='../erased_serde/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='index.html'>erased_serde</a></p><script>window.sidebarCurrent = {name: 'deserialize', ty: 'fn', 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/erased_serde/de.rs.html#41-46' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='index.html'>erased_serde</a>::<wbr><a class="fn" href=''>deserialize</a></span></h1><pre class='rust fn'>pub fn deserialize<'de, T>(<br> deserializer: &mut dyn <a class="trait" href="../erased_serde/trait.Deserializer.html" title="trait erased_serde::Deserializer">Deserializer</a><'de><br>) -> <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="struct" href="../erased_serde/struct.Error.html" title="struct erased_serde::Error">Error</a>> <span class="where fmt-newline">where<br> T: <a class="trait" href="../serde/de/trait.Deserialize.html" title="trait serde::de::Deserialize">Deserialize</a><'de>, </span></pre><div class='docblock'><p>Deserialize a value of type <code>T</code> from the given trait object.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">erased_serde</span>;
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_json</span>;
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_cbor</span>;
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">BTreeMap</span> <span class="kw">as</span> <span class="ident">Map</span>;
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<span class="kw">use</span> <span class="ident">erased_serde</span>::<span class="ident">Deserializer</span>;
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="kw">static</span> <span class="ident">JSON</span>: <span class="kw-2">&</span><span class="lifetime">'static</span> [<span class="ident">u8</span>] <span class="op">=</span> <span class="string">br#"{"A": 65, "B": 66}"#</span>;
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<span class="kw">static</span> <span class="ident">CBOR</span>: <span class="kw-2">&</span><span class="lifetime">'static</span> [<span class="ident">u8</span>] <span class="op">=</span> <span class="kw-2">&</span>[<span class="number">162</span>, <span class="number">97</span>, <span class="number">65</span>, <span class="number">24</span>, <span class="number">65</span>, <span class="number">97</span>, <span class="number">66</span>, <span class="number">24</span>, <span class="number">66</span>];
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<span class="comment">// Construct some deserializers.</span>
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<span class="kw">let</span> <span class="ident">json</span> <span class="op">=</span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">serde_json</span>::<span class="ident">de</span>::<span class="ident">Deserializer</span>::<span class="ident">from_slice</span>(<span class="ident">JSON</span>);
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<span class="kw">let</span> <span class="ident">cbor</span> <span class="op">=</span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">serde_cbor</span>::<span class="ident">de</span>::<span class="ident">Deserializer</span>::<span class="ident">from_slice</span>(<span class="ident">CBOR</span>);
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<span class="comment">// The values in this map are boxed trait objects, which is not possible</span>
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<span class="comment">// with the normal serde::Deserializer because of object safety.</span>
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">formats</span>: <span class="ident">Map</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">Box</span><span class="op"><</span><span class="ident">Deserializer</span><span class="op">></span><span class="op">></span> <span class="op">=</span> <span class="ident">Map</span>::<span class="ident">new</span>();
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<span class="ident">formats</span>.<span class="ident">insert</span>(<span class="string">"json"</span>, <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">Deserializer</span>::<span class="ident">erase</span>(<span class="ident">json</span>)));
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<span class="ident">formats</span>.<span class="ident">insert</span>(<span class="string">"cbor"</span>, <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">Deserializer</span>::<span class="ident">erase</span>(<span class="ident">cbor</span>)));
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<span class="comment">// Pick a Deserializer out of the formats map.</span>
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<span class="kw">let</span> <span class="ident">format</span> <span class="op">=</span> <span class="ident">formats</span>.<span class="ident">get_mut</span>(<span class="string">"json"</span>).<span class="ident">unwrap</span>();
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<span class="kw">let</span> <span class="ident">data</span>: <span class="ident">Map</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">usize</span><span class="op">></span> <span class="op">=</span> <span class="ident">erased_serde</span>::<span class="ident">deserialize</span>(<span class="ident">format</span>).<span class="ident">unwrap</span>();
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">data</span>[<span class="string">"A"</span>] <span class="op">+</span> <span class="ident">data</span>[<span class="string">"B"</span>]);
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}</pre></div>
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