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<p class='location'>Struct StdRng</p><div class="block items"><ul><li><a href="#methods">Methods</a></li><li><a href="#implementations">Trait Implementations</a></li></ul></div><p class='location'><a href='index.html'>rand</a></p><script>window.sidebarCurrent = {name: 'StdRng', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>rand</a>::<wbr><a class="struct" href=''>StdRng</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../src/rand/lib.rs.html#797-799' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct StdRng { /* fields omitted */ }</pre><div class='docblock'><p>The standard RNG. This is designed to be efficient on the current
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platform.</p>
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</div><h2 id='methods'>Methods</h2><h3 class='impl'><span class='in-band'><code>impl <a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/rand/lib.rs.html#801-816' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.new' class="method"><span id='new.v' class='invisible'><code>fn <a href='#method.new' class='fnname'>new</a>() -> <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a><<a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a>></code></span></h4>
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<div class='docblock'><p>Create a randomly seeded instance of <code>StdRng</code>.</p>
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<p>This is a very expensive operation as it has to read
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randomness from the operating system and use this in an
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expensive seeding operation. If one is only generating a small
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number of random numbers, or doesn't need the utmost speed for
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generating each number, <code>thread_rng</code> and/or <code>random</code> may be more
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appropriate.</p>
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<p>Reading the randomness from the OS may fail, and any error is
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propagated via the <code>io::Result</code> return value.</p>
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</div></div><h2 id='implementations'>Trait Implementations</h2><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/rand/lib.rs.html#796' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'></div><h3 class='impl'><span class='in-band'><code>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/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/rand/lib.rs.html#796' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span></h4>
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<div class='docblock'><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>
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</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: &Self)</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div></span></h4>
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<div class='docblock'><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>
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</div></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="../rand/trait.Rng.html" title="trait rand::Rng">Rng</a> for <a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/rand/lib.rs.html#818-828' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.next_u32' class="method"><span id='next_u32.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#tymethod.next_u32' class='fnname'>next_u32</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span></h4>
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<div class='docblock'><p>Return the next random u32. <a href="../rand/trait.Rng.html#tymethod.next_u32">Read more</a></p>
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</div><h4 id='method.next_u64' class="method"><span id='next_u64.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.next_u64' class='fnname'>next_u64</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code></span></h4>
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<div class='docblock'><p>Return the next random u64. <a href="../rand/trait.Rng.html#method.next_u64">Read more</a></p>
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</div><h4 id='method.next_f32' class="method"><span id='next_f32.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.next_f32' class='fnname'>next_f32</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></code></span></h4>
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<div class='docblock'><p>Return the next random f32 selected from the half-open interval <code>[0, 1)</code>. <a href="../rand/trait.Rng.html#method.next_f32">Read more</a></p>
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</div><h4 id='method.next_f64' class="method"><span id='next_f64.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.next_f64' class='fnname'>next_f64</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></code></span></h4>
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<div class='docblock'><p>Return the next random f64 selected from the half-open interval <code>[0, 1)</code>. <a href="../rand/trait.Rng.html#method.next_f64">Read more</a></p>
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</div><h4 id='method.fill_bytes' class="method"><span id='fill_bytes.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.fill_bytes' class='fnname'>fill_bytes</a>(&mut self, dest: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&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></span></h4>
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<div class='docblock'><p>Fill <code>dest</code> with random data. <a href="../rand/trait.Rng.html#method.fill_bytes">Read more</a></p>
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</div><h4 id='method.gen' class="method"><span id='gen.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.gen' class='fnname'>gen</a><T: <a class="trait" href="../rand/trait.Rand.html" title="trait rand::Rand">Rand</a>>(&mut self) -> T <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Return a random value of a <code>Rand</code> type. <a href="../rand/trait.Rng.html#method.gen">Read more</a></p>
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</div><h4 id='method.gen_iter' class="method"><span id='gen_iter.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.gen_iter' class='fnname'>gen_iter</a><'a, T: <a class="trait" href="../rand/trait.Rand.html" title="trait rand::Rand">Rand</a>>(&'a mut self) -> <a class="struct" href="../rand/struct.Generator.html" title="struct rand::Generator">Generator</a><'a, T, Self> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Return an iterator that will yield an infinite number of randomly generated items. <a href="../rand/trait.Rng.html#method.gen_iter">Read more</a></p>
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</div><h4 id='method.gen_range' class="method"><span id='gen_range.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.gen_range' class='fnname'>gen_range</a><T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a> + <a class="trait" href="../rand/distributions/range/trait.SampleRange.html" title="trait rand::distributions::range::SampleRange">SampleRange</a>>(&mut self, low: T, high: T) -> T <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Generate a random value in the range [<code>low</code>, <code>high</code>). <a href="../rand/trait.Rng.html#method.gen_range">Read more</a></p>
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</div><h4 id='method.gen_weighted_bool' class="method"><span id='gen_weighted_bool.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.gen_weighted_bool' class='fnname'>gen_weighted_bool</a>(&mut self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Return a bool with a 1 in n chance of true <a href="../rand/trait.Rng.html#method.gen_weighted_bool">Read more</a></p>
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</div><h4 id='method.gen_ascii_chars' class="method"><span id='gen_ascii_chars.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.gen_ascii_chars' class='fnname'>gen_ascii_chars</a><'a>(&'a mut self) -> <a class="struct" href="../rand/struct.AsciiGenerator.html" title="struct rand::AsciiGenerator">AsciiGenerator</a><'a, Self> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Return an iterator of random characters from the set A-Z,a-z,0-9. <a href="../rand/trait.Rng.html#method.gen_ascii_chars">Read more</a></p>
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</div><h4 id='method.choose' class="method"><span id='choose.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.choose' class='fnname'>choose</a><'a, T>(&mut self, values: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a T> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Return a random element from <code>values</code>. <a href="../rand/trait.Rng.html#method.choose">Read more</a></p>
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</div><h4 id='method.choose_mut' class="method"><span id='choose_mut.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.choose_mut' class='fnname'>choose_mut</a><'a, T>(&mut self, values: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a mut [</a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'a mut T> <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><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>
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</div><h4 id='method.shuffle' class="method"><span id='shuffle.v' class='invisible'><code>fn <a href='../rand/trait.Rng.html#method.shuffle' class='fnname'>shuffle</a><T>(&mut self, values: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&mut [</a>T<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) <span class="where fmt-newline">where<br> Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code></span></h4>
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<div class='docblock'><p>Shuffle a mutable slice in place. <a href="../rand/trait.Rng.html#method.shuffle">Read more</a></p>
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</div></div><h3 class='impl'><span class='in-band'><code>impl<'a> <a class="trait" href="../rand/trait.SeedableRng.html" title="trait rand::SeedableRng">SeedableRng</a><<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.usize.html">usize</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>> for <a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/rand/lib.rs.html#830-840' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.reseed' class="method"><span id='reseed.v' class='invisible'><code>fn <a href='../rand/trait.SeedableRng.html#tymethod.reseed' class='fnname'>reseed</a>(&mut self, seed: <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.usize.html">usize</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>)</code></span></h4>
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<div class='docblock'><p>Reseed an RNG with the given seed. <a href="../rand/trait.SeedableRng.html#tymethod.reseed">Read more</a></p>
|
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</div><h4 id='method.from_seed' class="method"><span id='from_seed.v' class='invisible'><code>fn <a href='../rand/trait.SeedableRng.html#tymethod.from_seed' class='fnname'>from_seed</a>(seed: <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.usize.html">usize</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -> <a class="struct" href="../rand/struct.StdRng.html" title="struct rand::StdRng">StdRng</a></code></span></h4>
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||
<div class='docblock'><p>Create a new RNG with the given seed. <a href="../rand/trait.SeedableRng.html#tymethod.from_seed">Read more</a></p>
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