14 lines
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14 lines
4.7 KiB
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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="Generate a random value in the given range using the thread-local random number generator."><title>random_range in rand - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.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"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="rand" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.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]--><rustdoc-topbar><h2><a href="#">random_range</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../rand/index.html"><img src="https://www.rust-lang.org/logos/rust-logo-128x128-blk.png" alt="logo"></a><h2><a href="../rand/index.html">rand</a><span class="version">0.9.2</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">random_<wbr>range</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#example" title="Example">Example</a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate rand</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="index.html">rand</a></div><h1>Function <span class="fn">random_<wbr>range</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/rand/lib.rs.html#217-223">Source</a> </span></div><pre class="rust item-decl"><code>pub fn random_range<T, R>(range: R) -> T<div class="where">where
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T: <a class="trait" href="distr/uniform/trait.SampleUniform.html" title="trait rand::distr::uniform::SampleUniform">SampleUniform</a>,
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R: <a class="trait" href="distr/uniform/trait.SampleRange.html" title="trait rand::distr::uniform::SampleRange">SampleRange</a><T>,</div></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Generate a random value in the given range using the thread-local random number generator.</p>
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<p>This function is shorthand for
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<code><a href="fn.rng.html" title="fn rand::rng">rng()</a>.<a href="trait.Rng.html#method.random_range" title="method rand::Rng::random_range">random_range</a>(<var>range</var>)</code>.</p>
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<h2 id="example"><a class="doc-anchor" href="#example">§</a>Example</h2>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>y: f32 = rand::random_range(<span class="number">0.0</span>..=<span class="number">1e9</span>);
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<span class="macro">println!</span>(<span class="string">"{}"</span>, y);
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<span class="kw">let </span>words: Vec<<span class="kw-2">&</span>str> = <span class="string">"Mary had a little lamb"</span>.split(<span class="string">' '</span>).collect();
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<span class="macro">println!</span>(<span class="string">"{}"</span>, words[rand::random_range(..words.len())]);</code></pre></div>
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<p>Note that the first example can also be achieved (without <code>collect</code>’ing
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to a <code>Vec</code>) using <a href="seq/trait.IteratorRandom.html#method.choose" title="method rand::seq::IteratorRandom::choose"><code>seq::IteratorRandom::choose</code></a>.</p>
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</div></details></section></div></main></body></html> |