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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="Version of the `getrandom` function which fills `dest` with random bytes returns a mutable reference to those bytes."><title>getrandom_uninit in getrandom - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-42caa33d.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="getrandom" data-themes="" data-resource-suffix="" data-rustdoc-version="1.84.1 (e71f9a9a9 2025-01-27)" data-channel="1.84.1" data-search-js="search-92e6798f.js" data-settings-js="settings-0f613d39.js" ><script src="../static.files/storage-59e33391.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-893ab5e7.css"></noscript><link rel="icon" href="https://www.rust-lang.org/favicon.ico"></head><body class="rustdoc fn"><!--[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" title="show sidebar"></button><a class="logo-container" href="../getrandom/index.html"><img src="https://www.rust-lang.org/logos/rust-logo-128x128-blk.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../getrandom/index.html"><img src="https://www.rust-lang.org/logos/rust-logo-128x128-blk.png" alt="logo"></a><h2><a href="../getrandom/index.html">getrandom</a><span class="version">0.2.15</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">getrandom_<wbr>uninit</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#examples" title="Examples">Examples</a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate getrandom</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">getrandom</a></span><h1>Function <span class="fn">getrandom_uninit</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/getrandom/lib.rs.html#396-403">Source</a> </span></div><pre class="rust item-decl"><code>pub fn getrandom_uninit(
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dest: &mut [<a class="union" href="https://doc.rust-lang.org/1.84.1/core/mem/maybe_uninit/union.MaybeUninit.html" title="union core::mem::maybe_uninit::MaybeUninit">MaybeUninit</a><<a class="primitive" href="https://doc.rust-lang.org/1.84.1/std/primitive.u8.html">u8</a>>],
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) -> <a class="enum" href="https://doc.rust-lang.org/1.84.1/core/result/enum.Result.html" title="enum core::result::Result">Result</a><&mut [<a class="primitive" href="https://doc.rust-lang.org/1.84.1/std/primitive.u8.html">u8</a>], <a class="struct" href="struct.Error.html" title="struct getrandom::Error">Error</a>></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Version of the <code>getrandom</code> function which fills <code>dest</code> with random bytes
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returns a mutable reference to those bytes.</p>
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<p>On successful completion this function is guaranteed to return a slice
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which points to the same memory as <code>dest</code> and has the same length.
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In other words, it’s safe to assume that <code>dest</code> is initialized after
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this function has returned <code>Ok</code>.</p>
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<p>No part of <code>dest</code> will ever be de-initialized at any point, regardless
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of what is returned.</p>
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<h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2>
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<div class="example-wrap ignore"><a href="#" class="tooltip" title="This example is not tested">ⓘ</a><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(maybe_uninit_uninit_array)]
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</span><span class="kw">let </span><span class="kw-2">mut </span>buf = core::mem::MaybeUninit::uninit_array::<<span class="number">1024</span>>();
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<span class="kw">let </span>buf: <span class="kw-2">&mut </span>[u8] = getrandom::getrandom_uninit(<span class="kw-2">&mut </span>buf)<span class="question-mark">?</span>;</code></pre></div>
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</div></details></section></div></main></body></html> |