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oxipng/doc/bitflags/__core/convert/trait.From.html
Joshua Holmer f8deac1cea Update generated documentation [ci skip]
2016-04-20 15:59:23 -04:00

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<section id='main' class="content trait">
<h1 class='fqn'><span class='in-band'>Trait <a href='../../index.html'>bitflags</a>::<wbr><a href='../index.html'>__core</a>::<wbr><a href='index.html'>convert</a>::<wbr><a class='trait' href=''>From</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>&#x2212;</span>]
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</span><a id='src-22597' class='srclink' href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html?gotosrc=22597' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait From&lt;T&gt; {
fn <a href='#tymethod.from' class='fnname'>from</a>(T) -&gt; Self;
}</pre><div class='docblock'><p>Construct <code>Self</code> via a conversion.</p>
<p><strong>Note: this trait must not fail</strong>. If the conversion can fail, use a dedicated method which
returns an <code>Option&lt;T&gt;</code> or a <code>Result&lt;T, E&gt;</code>.</p>
<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
<p><code>String</code> implements <code>From&lt;&amp;str&gt;</code>:</p>
<pre class='rust rust-example-rendered'>
<span class='kw'>let</span> <span class='ident'>string</span> <span class='op'>=</span> <span class='string'>&quot;hello&quot;</span>.<span class='ident'>to_string</span>();
<span class='kw'>let</span> <span class='ident'>other_string</span> <span class='op'>=</span> <span class='ident'>String</span>::<span class='ident'>from</span>(<span class='string'>&quot;hello&quot;</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>string</span>, <span class='ident'>other_string</span>);</pre>
<h1 id='generic-impls' class='section-header'><a href='#generic-impls'>Generic impls</a></h1>
<ul>
<li><code>From&lt;T&gt; for U</code> implies <code>Into&lt;U&gt; for T</code></li>
<li><code>from()</code> is reflexive, which means that <code>From&lt;T&gt; for T</code> is implemented</li>
</ul>
</div>
<h2 id='required-methods'>Required Methods</h2>
<div class='methods'>
<h3 id='tymethod.from' class='method stab '><code>fn <a href='#tymethod.from' class='fnname'>from</a>(T) -&gt; Self</code></h3><div class='docblock'><p>Performs the conversion.</p>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f32.html'>f32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f32.html'>f32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f32.html'>f32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f64.html'>f64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.f32.html'>f32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i64.html'>i64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i64.html'>i64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i32.html'>i32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i64.html'>i64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i32.html'>i32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i16.html'>i16</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i64.html'>i64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i64.html'>i64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i32.html'>i32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.isize.html'>isize</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i64.html'>i64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i32.html'>i32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.i16.html'>i16</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u64.html'>u64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u64.html'>u64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u32.html'>u32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.usize.html'>usize</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u64.html'>u64</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u32.html'>u32</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u16.html'>u16</a></code></li>
<li><code>impl&lt;T&gt; From for <a class='struct' href='../../../bitflags/__core/boxed/struct.Box.html' title='bitflags::__core::boxed::Box'>Box</a>&lt;T&gt;</code></li>
<li><code>impl&lt;'a&gt; From for <a class='struct' href='../../../bitflags/__core/vec/struct.Vec.html' title='bitflags::__core::vec::Vec'>Vec</a>&lt;<a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u8.html'>u8</a>&gt;</code></li>
<li><code>impl&lt;'a, T&gt; From for <a class='struct' href='../../../bitflags/__core/vec/struct.Vec.html' title='bitflags::__core::vec::Vec'>Vec</a>&lt;T&gt; <span class='where'>where T: <a class='trait' href='../../../bitflags/__core/clone/trait.Clone.html' title='bitflags::__core::clone::Clone'>Clone</a></span></code></li>
<li><code>impl&lt;T&gt; From for <a class='struct' href='../../../bitflags/__core/vec/struct.Vec.html' title='bitflags::__core::vec::Vec'>Vec</a>&lt;T&gt;</code></li>
<li><code>impl&lt;'a&gt; From for <a class='struct' href='../../../bitflags/__core/string/struct.String.html' title='bitflags::__core::string::String'>String</a></code></li>
<li><code>impl From for <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.u32.html'>u32</a></code></li>
<li><code>impl&lt;T&gt; From for <a class='struct' href='../../../bitflags/__core/collections/binary_heap/struct.BinaryHeap.html' title='bitflags::__core::collections::binary_heap::BinaryHeap'>BinaryHeap</a>&lt;T&gt; <span class='where'>where T: <a class='trait' href='../../../bitflags/__core/cmp/trait.Ord.html' title='bitflags::__core::cmp::Ord'>Ord</a></span></code></li>
<li><code>impl&lt;T&gt; From for <a class='struct' href='../../../bitflags/__core/sync/struct.Arc.html' title='bitflags::__core::sync::Arc'>Arc</a>&lt;T&gt;</code></li>
<li><code>impl&lt;T&gt; From for <a class='struct' href='../../../bitflags/__core/rc/struct.Rc.html' title='bitflags::__core::rc::Rc'>Rc</a>&lt;T&gt;</code></li>
<li><code>impl&lt;'a, T&gt; From for <a class='enum' href='../../../bitflags/__core/borrow/enum.Cow.html' title='bitflags::__core::borrow::Cow'>Cow</a>&lt;'a, <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.slice.html'>[</a>T<a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.slice.html'>]</a>&gt; <span class='where'>where T: <a class='trait' href='../../../bitflags/__core/clone/trait.Clone.html' title='bitflags::__core::clone::Clone'>Clone</a></span></code></li>
<li><code>impl&lt;'a&gt; From for <a class='enum' href='../../../bitflags/__core/borrow/enum.Cow.html' title='bitflags::__core::borrow::Cow'>Cow</a>&lt;'a, <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.str.html'>str</a>&gt;</code></li>
<li><code>impl&lt;'a&gt; From for <a class='enum' href='../../../bitflags/__core/borrow/enum.Cow.html' title='bitflags::__core::borrow::Cow'>Cow</a>&lt;'a, <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.str.html'>str</a>&gt;</code></li>
<li><code>impl&lt;'a, T&gt; From for <a class='enum' href='../../../bitflags/__core/borrow/enum.Cow.html' title='bitflags::__core::borrow::Cow'>Cow</a>&lt;'a, <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.slice.html'>[</a>T<a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.slice.html'>]</a>&gt; <span class='where'>where T: <a class='trait' href='../../../bitflags/__core/clone/trait.Clone.html' title='bitflags::__core::clone::Clone'>Clone</a></span></code></li>
<li><code>impl&lt;Idx&gt; From for <a class='enum' href='../../../bitflags/__core/ops/enum.RangeInclusive.html' title='bitflags::__core::ops::RangeInclusive'>RangeInclusive</a>&lt;Idx&gt; <span class='where'>where Idx: <a class='trait' href='../../../bitflags/__core/num/trait.One.html' title='bitflags::__core::num::One'>One</a> + <a class='trait' href='../../../bitflags/__core/ops/trait.Sub.html' title='bitflags::__core::ops::Sub'>Sub</a>&lt;Idx, Output=Idx&gt; + <a class='trait' href='../../../bitflags/__core/cmp/trait.PartialOrd.html' title='bitflags::__core::cmp::PartialOrd'>PartialOrd</a>&lt;Idx&gt;</span></code></li>
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