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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 `from_bytes` fn in crate `plain`."><meta name="keywords" content="rust, rustlang, rust-lang, from_bytes"><title>plain::from_bytes - 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='../plain/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'>plain</a></p><script>window.sidebarCurrent = {name: 'from_bytes', 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/plain/methods.rs.html#72-79' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='index.html'>plain</a>::<wbr><a class="fn" href=''>from_bytes</a></span></h1><pre class='rust fn'>pub fn from_bytes<T>(bytes: &[u8]) -> <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="enum" href="../plain/enum.Error.html" title="enum plain::Error">Error</a>> <span class="where fmt-newline">where<br> T: <a class="trait" href="../plain/trait.Plain.html" title="trait plain::Plain">Plain</a>, </span></pre><div class='docblock'><p>Safely converts a byte slice to a reference.</p>
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<p>However, if the byte slice is not long enough
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to contain target type, or if it doesn't
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satisfy the type's alignment requirements,
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the function returns an error.</p>
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<p>The function will not fail when the
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byte slice is longer than necessary, since it is
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a common practice to interpret the beginning of
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a slice as a fixed-size header.</p>
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<p>In many cases it is preferrable to allocate
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a value/slice of the target type and use
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<a href="fn.copy_from_bytes.html"><code>copy_from_bytes()</code></a> to copy
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data instead. That way, any issues with alignment
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are implicitly avoided.</p>
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