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<h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>serde_json</a>::<wbr><a href='index.html'>de</a>::<wbr><a class="fn" href=''>from_slice</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../src/serde_json/de.rs.html#2217-2222' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn from_slice<'a, T>(v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="type" href="../../serde_json/type.Result.html" title="type serde_json::Result">Result</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../serde/de/trait.Deserialize.html" title="trait serde::de::Deserialize">Deserialize</a><'a>, </span></pre><div class='docblock'><p>Deserialize an instance of type <code>T</code> from bytes of JSON text.</p>
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<h1 id="errors" class="section-header"><a href="#errors">Errors</a></h1>
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<p>This conversion can fail if the structure of the input does not match the
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structure expected by <code>T</code>, for example if <code>T</code> is a struct type but the input
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contains something other than a JSON map. It can also fail if the structure
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is correct but <code>T</code>'s implementation of <code>Deserialize</code> decides that something
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is wrong with the data, for example required struct fields are missing from
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the JSON map or some number is too big to fit in the expected primitive
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type.</p>
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<pre class="rust rust-example-rendered">
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<span class="attribute">#[<span class="ident">macro_use</span>]</span>
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">serde_derive</span>;
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">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="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>, <span class="ident">Debug</span>)]</span>
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<span class="kw">struct</span> <span class="ident">User</span> {
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<span class="ident">fingerprint</span>: <span class="ident">String</span>,
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<span class="ident">location</span>: <span class="ident">String</span>,
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}
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<span class="comment">// The type of `j` is `&[u8]`</span>
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<span class="kw">let</span> <span class="ident">j</span> <span class="op">=</span> <span class="string">b"{
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\"fingerprint\": \"0xF9BA143B95FF6D82\",
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\"location\": \"Menlo Park, CA\"
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}"</span>;
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<span class="kw">let</span> <span class="ident">u</span>: <span class="ident">User</span> <span class="op">=</span> <span class="ident">serde_json</span>::<span class="ident">from_slice</span>(<span class="ident">j</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">u</span>);
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