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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 `StdRng` struct in crate `rand`."><meta name="keywords" content="rust, rustlang, rust-lang, StdRng"><title>rand::rngs::StdRng - 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="https://www.rust-lang.org/favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[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">&#9776;</div><a href='../../rand/index.html'><div class='logo-container'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk.png' alt='logo'></div></a><p class='location'>Struct StdRng</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-CryptoRng">CryptoRng</a><a href="#impl-Debug">Debug</a><a href="#impl-RngCore">RngCore</a><a href="#impl-SeedableRng">SeedableRng</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow&lt;T&gt;</a><a href="#impl-BorrowMut%3CT%3E">BorrowMut&lt;T&gt;</a><a href="#impl-From%3CT%3E">From&lt;T&gt;</a><a href="#impl-FromEntropy">FromEntropy</a><a href="#impl-Into%3CU%3E">Into&lt;U&gt;</a><a href="#impl-Rng">Rng</a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-TryFrom%3CU%3E">TryFrom&lt;U&gt;</a><a href="#impl-TryInto%3CU%3E">TryInto&lt;U&gt;</a></div></div><p class='location'><a href='../index.html'>rand</a>::<wbr><a href='index.html'>rngs</a></p><script>window.sidebarCurrent = {name: 'StdRng', ty: 'struct', 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'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/rand/rngs/std.rs.html#33' title='goto source code'>[src]</a></span><span class='in-band'>Struct <a href='../index.html'>rand</a>::<wbr><a href='index.html'>rngs</a>::<wbr><a class="struct" href=''>StdRng</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust struct'>pub struct StdRng(_);</pre></div><div class='docblock'><
on the current platform, to be statistically strong and unpredictable
(meaning a cryptographically secure PRNG).</p>
<p>The current algorithm used on all platforms is <a href="rand_hc::Hc128Rng">HC-128</a>, found in the
<a href="https://crates.io/crates/rand_hc">rand_hc</a> crate.</p>
<p>Reproducibility of output from this generator is however not required, thus
future library versions may use a different internal generator with
different output. Further, this generator may not be portable and can
produce different output depending on the architecture. If you require
reproducible output, use a named RNG, for example <a href="rand_chacha::ChaChaRng"><code>ChaChaRng</code></a> from the
<a href="https://crates.io/crates/rand_chacha">rand_chacha</a> crate.</p>
</div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-Clone' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../../src/rand/rngs/std.rs.html#32' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method hidden"><code id='clone.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a class='srclink' href='../../src/rand/rngs/std.rs.html#32' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method hidden"><code id='clone_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/rand/rngs/std.rs.html#32' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/rand/rngs/std.rs.html#32' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-CryptoRng' class='impl'><code class='in-band'>impl <a class="trait" href="../../rand/trait.CryptoRng.html" title="trait rand::CryptoRng">CryptoRng</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-CryptoRng' class='anchor'></a><a class='srclink' href='../../src/rand/rngs/std.rs.html#67' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-RngCore' class='impl'><code class='in-band'>impl <a class="trait" href="../../rand/trait.RngCore.html" title="trait rand::RngCore">RngCore</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-RngCore' class='anchor'></a><a class='srclink' href='../../src/rand/rngs/std.rs.html#35-53' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.next_u32' class="method hidden"><code id='next_u32.v'>fn <a href='../../rand/trait.RngCore.html#tymethod.next_u32' class='fnname'>next_u32</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a class='srclink' href='../../src/rand/rngs/std.rs.html#37-39' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Return the next random <code>u32</code>. <a href="../../rand/trait.RngCore.html#tymethod.next_u32">Read more</a></p>
</div><h4 id='method.next_u64' class="method hidden"><code id='next_u64.v'>fn <a href='../../rand/trait.RngCore.html#tymethod.next_u64' class='fnname'>next_u64</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code><a class='srclink' href='../../src/rand/rngs/std.rs.html#42-44' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Return the next random <code>u64</code>. <a href="../../rand/trait.RngCore.html#tymethod.next_u64">Read more</a></p>
</div><h4 id='method.fill_bytes' class="method hidden"><code id='fill_bytes.v'>fn <a href='../../rand/trait.RngCore.html#tymethod.fill_bytes' class='fnname'>fill_bytes</a>(&amp;mut self, dest: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;mut [</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>)</code><a class='srclink' href='../../src/rand/rngs/std.rs.html#46-48' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Fill <code>dest</code> with random data. <a href="../../rand/trait.RngCore.html#tymethod.fill_bytes">Read more</a></p>
</div><h4 id='method.try_fill_bytes' class="method hidden"><code id='try_fill_bytes.v'>fn <a href='../../rand/trait.RngCore.html#tymethod.try_fill_bytes' class='fnname'>try_fill_bytes</a>(&amp;mut self, dest: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;mut [</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>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../../rand/struct.Error.html" title="struct rand::Error">Error</a>&gt;</code><a class='srclink' href='../../src/rand/rngs/std.rs.html#50-52' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Fill <code>dest</code> entirely with random data. <a href="../../rand/trait.RngCore.html#tymethod.try_fill_bytes">Read more</a></p>
</div></div><h3 id='impl-SeedableRng' class='impl'><code class='in-band'>impl <a class="trait" href="../../rand/trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-SeedableRng' class='anchor'></a><a class='srclink' href='../../src/rand/rngs/std.rs.html#55-65' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Seed' class="type"><code id='Seed.t'>type <a href='../../rand/trait.SeedableRng.html#associatedtype.Seed' class="type">Seed</a> = &lt;<a class="struct" href="../../rand_hc/hc128/struct.Hc128Rng.html" title="struct rand_hc::hc128::Hc128Rng">Hc128Rng</a> as <a class="trait" href="../../rand/trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>&gt;::<a class="type" href="../../rand/trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a></code></h4><div class='docblock'><p>Seed type, which is restricted to types mutably-dereferencable as <code>u8</code> arrays (we recommend <code>[u8; N]</code> for some <code>N</code>). <a href="../../rand/trait.SeedableRng.html#associatedtype.Seed">Read more</a></p>
</div><h4 id='method.from_seed' class="method hidden"><code id='from_seed.v'>fn <a href='../../rand/trait.SeedableRng.html#tymethod.from_seed' class='fnname'>from_seed</a>(seed: Self::<a class="type" href="../../rand/trait.SeedableRng.html#associatedtype.Seed" title="type rand::SeedableRng::Seed">Seed</a>) -&gt; Self</code><a class='srclink' href='../../src/rand/rngs/std.rs.html#58-60' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Create a new PRNG using the given seed. <a href="../../rand/trait.SeedableRng.html#tymethod.from_seed">Read more</a></p>
</div><h4 id='method.from_rng' class="method hidden"><code id='from_rng.v'>fn <a href='../../rand/trait.SeedableRng.html#method.from_rng' class='fnname'>from_rng</a>&lt;R:&nbsp;<a class="trait" href="../../rand/trait.RngCore.html" title="trait rand::RngCore">RngCore</a>&gt;(rng: R) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self, <a class="struct" href="../../rand/struct.Error.html" title="struct rand::Error">Error</a>&gt;</code><a class='srclink' href='../../src/rand/rngs/std.rs.html#62-64' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Create a new PRNG seeded from another <code>Rng</code>. <a href="../../rand/trait.SeedableRng.html#method.from_rng">Read more</a></p>
</div><h4 id='method.seed_from_u64' class="method hidden"><code id='seed_from_u64.v'>fn <a href='../../rand/trait.SeedableRng.html#method.seed_from_u64' class='fnname'>seed_from_u64</a>(state: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; Self</code><a class='srclink' href='../../src/rand_core/lib.rs.html#306-329' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Create a new PRNG using a <code>u64</code> seed. <a href="../../rand/trait.SeedableRng.html#method.seed_from_u64">Read more</a></p>
</div></div></div><h2 id='synthetic-implementations' class='small-section-header'>Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a></h2><div id='synthetic-implementations-list'><h3 id='impl-Send' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-Send' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Unpin' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-Unpin' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-Sync' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-UnwindSafe' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-UnwindSafe' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-RefUnwindSafe' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../../rand/rngs/struct.StdRng.html" title="struct rand::rngs::StdRng">StdRng</a></code><a href='#impl-RefUnwindSafe' class='anchor'></a></h3><div class='impl-items'></div></div><h2 id='blanket-implementations' class='small-section-header'>Blanket Implementations<a href='#blanket-implementations' class='anchor'></a></h2><div id='blanket-implementations-list'><h3 id='impl-Rng' class='impl'><code class='in-band'>impl&lt;R&gt; <a class="trait" href="../../rand/trait.Rng.html" title="trait rand::Rng">Rng</a> for R <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="../../rand/trait.RngCore.html" title="trait rand::RngCore">RngCore</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Rng' class='anchor'></a><a class='srclink' href='../../src/rand/lib.rs.html#443' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.gen' class="method hidden"><code id='gen.v'>fn <a href='../../rand/trait.Rng.html#method.gen' class='fnname'>gen</a>&lt;T&gt;(&amp;mut self) -&gt; T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;<a class="struct" href="../../rand/distributions/struct.Standard.html" title="struct rand::distributions::Standard">Standard</a>: <a class="trait" href="../../rand/distributions/trait.Distribution.html" title="trait rand::distributions::Distribution">Distribution</a>&lt;T&gt;,&nbsp;</span></code><a class='srclink' href='../../src/rand/lib.rs.html#214-216' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Return a random value supporting the [<code>Standard</code>] distribution. <a href="../../rand/trait.Rng.html#method.gen">Read more</a></p>
</div><h4 id='method.gen_range' class="method hidden"><code id='gen_range.v'>fn <a href='../../rand/trait.Rng.html#method.gen_range' class='fnname'>gen_range</a>&lt;T:&nbsp;<a class="trait" href="../../rand/distributions/uniform/trait.SampleUniform.html" title="trait rand::distributions::uniform::SampleUniform">SampleUniform</a>, B1, B2&gt;(&amp;mut self, low: B1, high: B2) -&gt; T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;B1: <a class="trait" href="../../rand/distributions/uniform/trait.SampleBorrow.html" title="trait rand::distributions::uniform::SampleBorrow">SampleBorrow</a>&lt;T&gt; + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,<br>&nbsp;&nbsp;&nbsp;&nbsp;B2: <a class="trait" href="../../rand/distributions/uniform/trait.SampleBorrow.html" title="trait rand::distributions::uniform::SampleBorrow">SampleBorrow</a>&lt;T&gt; + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a class='srclink' href='../../src/rand/lib.rs.html#242-246' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Generate a random value in the range [<code>low</code>, <code>high</code>), i.e. inclusive of <code>low</code> and exclusive of <code>high</code>. <a href="../../rand/trait.Rng.html#method.gen_range">Read more</a></p>
</div><h4 id='method.sample' class="method hidden"><code id='sample.v'>fn <a href='../../rand/trait.Rng.html#method.sample' class='fnname'>sample</a>&lt;T, D:&nbsp;<a class="trait" href="../../rand/distributions/trait.Distribution.html" title="trait rand::distributions::Distribution">Distribution</a>&lt;T&gt;&gt;(&amp;mut self, distr: D) -&gt; T</code><a class='srclink' href='../../src/rand/lib.rs.html#262-264' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Sample a new value, using the given distribution. <a href="../../rand/trait.Rng.html#method.sample">Read more</a></p>
</div><h4 id='method.sample_iter' class="method hidden"><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../../rand/distributions/struct.DistIter.html" title="struct rand::distributions::DistIter">DistIter</a>&lt;'a, D, R, T&gt;</span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../../rand/distributions/struct.DistIter.html" title="struct rand::distributions::DistIter">DistIter</a>&lt;'a, D, R, T&gt;</h3><code class="content"><span class="where fmt-newline">impl&lt;'a, D, R, T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="../../rand/distributions/struct.DistIter.html" title="struct rand::distributions::DistIter">DistIter</a>&lt;'a, D, R, T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;D: <a class="trait" href="../../rand/distributions/trait.Distribution.html" title="trait rand::distributions::Distribution">Distribution</a>&lt;T&gt;,<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="../../rand/trait.Rng.html" title="trait rand::Rng">Rng</a> + 'a,&nbsp;</span></span><span class="where fmt-newline"> type <a href='https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = T;</span></code></div></div><code id='sample_iter.v'>fn <a href='../../rand/trait.Rng.html#method.sample_iter' class='fnname'>sample_iter</a>&lt;'a, T, D:&nbsp;<a class="trait" href="../../rand/distributions/trait.Distribution.html" title="trait rand::distributions::Distribution">Distribution</a>&lt;T&gt;&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;'a mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;distr: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a </a>D<br>) -&gt; <a class="struct" href="../../rand/distributions/struct.DistIter.html" title="struct rand::distributions::DistIter">DistIter</a>&lt;'a, D, Self, T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a class='srclink' href='../../src/rand/lib.rs.html#293-297' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Create an iterator that generates values using the given distribution. <a href="../../rand/trait.Rng.html#method.sample_iter">Read more</a></p>
</div><h4 id='method.fill' class="method hidden"><code id='fill.v'>fn <a href='../../rand/trait.Rng.html#method.fill' class='fnname'>fill</a>&lt;T:&nbsp;<a class="trait" href="../../rand/trait.AsByteSliceMut.html" title="trait rand::AsByteSliceMut">AsByteSliceMut</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt;(&amp;mut self, dest: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T)</code><a class='srclink' href='../../src/rand/lib.rs.html#321-324' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Fill <code>dest</code> entirely with random bytes (uniform value distribution), where <code>dest</code> is any type supporting [<code>AsByteSliceMut</code>], namely slices and arrays over primitive integer types (<code>i8</code>, <code>i16</code>, <code>u32</code>, etc.). <a href="../../rand/trait.Rng.html#method.fill">Read more</a></p>
</div><h4 id='method.try_fill' class="method hidden"><code id='try_fill.v'>fn <a href='../../rand/trait.Rng.html#method.try_fill' class='fnname'>try_fill</a>&lt;T:&nbsp;<a class="trait" href="../../rand/trait.AsByteSliceMut.html" title="trait rand::AsByteSliceMut">AsByteSliceMut</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>&gt;(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;mut self, <br>&nbsp;&nbsp;&nbsp;&nbsp;dest: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T<br>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../../rand/struct.Error.html" title="struct rand::Error">Error</a>&gt;</code><a class='srclink' href='../../src/rand/lib.rs.html#355-359' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Fill <code>dest</code> entirely with random bytes (uniform value distribution), where <code>dest</code> is any type supporting [<code>AsByteSliceMut</code>], namely slices and arrays over primitive integer types (<code>i8</code>, <code>i16</code>, <code>u32</code>, etc.). <a href="../../rand/trait.Rng.html#method.try_fill">Read more</a></p>
</div><h4 id='method.gen_bool' class="method hidden"><code id='gen_bool.v'>fn <a href='../../rand/trait.Rng.html#method.gen_bool' class='fnname'>gen_bool</a>(&amp;mut self, p: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/rand/lib.rs.html#381-384' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Return a bool with a probability <code>p</code> of being true. <a href="../../rand/trait.Rng.html#method.gen_bool">Read more</a></p>
</div><h4 id='method.gen_ratio' class="method hidden"><code id='gen_ratio.v'>fn <a href='../../rand/trait.Rng.html#method.gen_ratio' class='fnname'>gen_ratio</a>(&amp;mut self, numerator: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>, denominator: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/rand/lib.rs.html#410-413' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Return a bool with a probability of <code>numerator/denominator</code> of being true. I.e. <code>gen_ratio(2, 3)</code> has chance of 2 in 3, or about 67%, of returning true. If <code>numerator == denominator</code>, then the returned value is guaranteed to be <code>true</code>. If <code>numerator == 0</code>, then the returned value is guaranteed to be <code>false</code>. <a href="../../rand/trait.Rng.html#method.gen_ratio">Read more</a></p>
</div><h4 id='method.choose' class="method hidden"><code id='choose.v'>fn <a href='../../rand/trait.Rng.html#method.choose' class='fnname'>choose</a>&lt;'a, T&gt;(&amp;mut self, values: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;'a [T]</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a </a>T&gt;</code><a class='srclink' href='../../src/rand/lib.rs.html#419-422' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab deprecated'>Deprecated since 0.6.0: <p>use SliceRandom::choose instead</p>
</div></div><div class='docblock hidden'><p>Return a random element from <code>values</code>. <a href="../../rand/trait.Rng.html#method.choose">Read more</a></p>
</div><h4 id='method.choose_mut' class="method hidden"><code id='choose_mut.v'>fn <a href='../../rand/trait.Rng.html#method.choose_mut' class='fnname'>choose_mut</a>&lt;'a, T&gt;(&amp;mut self, values: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;'a mut [T]</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;'a mut </a>T&gt;</code><a class='srclink' href='../../src/rand/lib.rs.html#428-431' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab deprecated'>Deprecated since 0.6.0: <p>use SliceRandom::choose_mut instead</p>
</div></div><div class='docblock hidden'><p>Return a mutable pointer to a random element from <code>values</code>. <a href="../../rand/trait.Rng.html#method.choose_mut">Read more</a></p>
</div><h4 id='method.shuffle' class="method hidden"><code id='shuffle.v'>fn <a href='../../rand/trait.Rng.html#method.shuffle' class='fnname'>shuffle</a>&lt;T&gt;(&amp;mut self, values: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;mut [T]</a>)</code><a class='srclink' href='../../src/rand/lib.rs.html#437-440' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab deprecated'>Deprecated since 0.6.0: <p>use SliceRandom::shuffle instead</p>
</div></div><div class='docblock hidden'><p>Shuffle a mutable slice in place. <a href="../../rand/trait.Rng.html#method.shuffle">Read more</a></p>
</div></div><h3 id='impl-FromEntropy' class='impl'><code class='in-band'>impl&lt;R&gt; <a class="trait" href="../../rand/trait.FromEntropy.html" title="trait rand::FromEntropy">FromEntropy</a> for R <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;R: <a class="trait" href="../../rand/trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a>,&nbsp;</span></code><a href='#impl-FromEntropy' class='anchor'></a><a class='srclink' href='../../src/rand/lib.rs.html#600-605' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_entropy' class="method hidden"><code id='from_entropy.v'>fn <a href='../../rand/trait.FromEntropy.html#tymethod.from_entropy' class='fnname'>from_entropy</a>() -&gt; R</code><a class='srclink' href='../../src/rand/lib.rs.html#601-604' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates a new instance, automatically seeded with fresh entropy. <a href="../../rand/trait.FromEntropy.html#tymethod.from_entropy">Read more</a></p>
</div></div><h3 id='impl-ToOwned' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,&nbsp;</span></code><a href='#impl-ToOwned' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#81-92' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Owned' class="type"><code id='Owned.t'>type <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned' class="type">Owned</a> = T</code></h4><div class='docblock'><p>The resulting type after obtaining ownership.</p>
</div><h4 id='method.to_owned' class="method hidden"><code id='to_owned.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned' class='fnname'>to_owned</a>(&amp;self) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#85-87' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div><h4 id='method.clone_into' class="method hidden"><code id='clone_into.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into' class='fnname'>clone_into</a>(&amp;self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#89-91' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</summary><p>recently added</p>
</details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></div><h3 id='impl-Into%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-Into%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#544-549' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -&gt; U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#546-548' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-From%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</code><a href='#impl-From%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#553-555' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#554' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryFrom%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryFrom%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#572-578' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#575-577' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryInto%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryInto%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#560-567' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#564-566' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-BorrowMut%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-BorrowMut%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-220' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Borrow%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-215' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id='impl-Any' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#100-102' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#101' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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