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<p class='location'>Trait NumCast</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.from">from</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-NumCast">f64</a><a href="#impl-NumCast">u64</a><a href="#impl-NumCast">i64</a><a href="#impl-NumCast">i8</a><a href="#impl-NumCast">f32</a><a href="#impl-NumCast">u16</a><a href="#impl-NumCast">i32</a><a href="#impl-NumCast">isize</a><a href="#impl-NumCast">usize</a><a href="#impl-NumCast">Wrapping<T></a><a href="#impl-NumCast">u8</a><a href="#impl-NumCast">i16</a><a href="#impl-NumCast">u32</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../index.html'>num_traits</a>::<wbr><a href='index.html'>cast</a></p><script>window.sidebarCurrent = {name: 'NumCast', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>num_traits</a>::<wbr><a href='index.html'>cast</a>::<wbr><a class="trait" href=''>NumCast</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/num_traits/cast.rs.html#592-596' title='goto source code'>[src]</a></span></h1>
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<pre class='rust trait'>pub trait NumCast: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a> {
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fn <a href='#tymethod.from' class='fnname'>from</a><T>(n: T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Self><br> <span class="where">where<br> T: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a></span>;
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}</pre><div class='docblock'><p>An interface for casting between machine scalars.</p>
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<h2 id='required-methods' class='small-section-header'>
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Required Methods<a href='#required-methods' class='anchor'></a>
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</h2>
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<div class='methods'>
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<h3 id='tymethod.from' class='method'><span id='from.v' class='invisible'><code>fn <a href='#tymethod.from' class='fnname'>from</a><T>(n: T) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><Self> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span></h3><div class='docblock'><p>Creates a number from another value that can be converted into
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a primitive via the <code>ToPrimitive</code> trait.</p>
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</div></div>
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<h2 id='foreign-impls' class='small-section-header'>
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Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a>
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</h2>
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<h3 id='impl-NumCast' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></code><a href='#impl-NumCast' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from' class="method"><span id='from.v-1' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-1' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code><a href='#impl-NumCast-1' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-1' class="method"><span id='from.v-2' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-2' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a href='#impl-NumCast-2' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-2' class="method"><span id='from.v-3' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-3' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></code><a href='#impl-NumCast-3' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-3' class="method"><span id='from.v-4' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-4' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></code><a href='#impl-NumCast-4' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-4' class="method"><span id='from.v-5' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-5' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code><a href='#impl-NumCast-5' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-5' class="method"><span id='from.v-6' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-6' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a href='#impl-NumCast-6' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-6' class="method"><span id='from.v-7' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-7' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code><a href='#impl-NumCast-7' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-7' class="method"><span id='from.v-8' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-8' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a href='#impl-NumCast-8' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-8' class="method"><span id='from.v-9' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-9' class='impl'><span class='in-band'><code>impl<T> <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a>, </span></code><a href='#impl-NumCast-9' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#629-633' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-9' class="method"><span id='from.v-10' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><U>(n: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T>> <span class="where fmt-newline">where<br> U: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#630-632' title='goto source code'>[src]</a></span></h4>
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</div></span><h3 id='impl-NumCast-10' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../num_traits/cast/trait.NumCast.html" title="trait num_traits::cast::NumCast">NumCast</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></code><a href='#impl-NumCast-10' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#600-608' title='goto source code'>[src]</a></span></h3>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-10' class="method"><span id='from.v-11' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-11' class="method"><span id='from.v-12' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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<span class='docblock autohide'><div class='impl-items'><h4 id='method.from-12' class="method"><span id='from.v-13' class='invisible'><code>fn <a href='#method.from' class='fnname'>from</a><N>(n: N) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>> <span class="where fmt-newline">where<br> N: <a class="trait" href="../../num_traits/cast/trait.ToPrimitive.html" title="trait num_traits::cast::ToPrimitive">ToPrimitive</a>, </span></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/num_traits/cast.rs.html#603-607' title='goto source code'>[src]</a></span></h4>
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