edlang/either/trait.IntoEither.html

37 lines
14 KiB
HTML
Raw Permalink Normal View History

<!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="Provides methods for converting a type `Self` into either a `Left` or `Right` variant of `Either&lt;Self, Self&gt;`."><title>IntoEither in either - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-dd39b87e5fcfba68.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="either" data-themes="" data-resource-suffix="" data-rustdoc-version="1.80.0 (051478957 2024-07-21)" data-channel="1.80.0" data-search-js="search-d52510db62a78183.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-118b08c4c78b968e.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-20a3ad099b048cf2.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-df360f571f6edeae.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../either/index.html">either</a><span class="version">1.13.0</span></h2></div><h2 class="location"><a href="#">IntoEither</a></h2><div class="sidebar-elems"><section><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.into_either">into_either</a></li><li><a href="#method.into_either_with">into_either_with</a></li></ul><h3><a href="#object-safety">Object Safety</a></h3><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In crate either</a></h2></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="index.html">either</a>::<wbr><a class="trait" href="#">IntoEither</a><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><span class="out-of-band"><a class="src" href="../src/either/into_either.rs.html#14-62">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub trait IntoEither: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
// Provided methods
fn <a href="#method.into_either" class="fn">into_either</a>(self, into_left: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>) -&gt; <a class="enum" href="enum.Either.html" title="enum either::Either">Either</a>&lt;Self, Self&gt; <a href="#" class="tooltip" data-notable-ty="Either&lt;Self, Self&gt;"></a> { ... }
<span class="item-spacer"></span> fn <a href="#method.into_either_with" class="fn">into_either_with</a>&lt;F&gt;(self, into_left: F) -&gt; <a class="enum" href="enum.Either.html" title="enum either::Either">Either</a>&lt;Self, Self&gt; <a href="#" class="tooltip" data-notable-ty="Either&lt;Self, Self&gt;"></a>
<span class="where">where F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&amp;Self</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></span> { ... }
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Provides methods for converting a type <code>Self</code> into either a <a href="enum.Either.html#variant.Left" title="variant either::Either::Left"><code>Left</code></a> or <a href="enum.Either.html#variant.Right" title="variant either::Either::Right"><code>Right</code></a>
variant of <a href="enum.Either.html" title="enum either::Either"><code>Either&lt;Self, Self&gt;</code></a>.</p>
<p>The <a href="trait.IntoEither.html#method.into_either" title="method either::IntoEither::into_either"><code>into_either</code></a> method takes a <a href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html" title="primitive bool"><code>bool</code></a> to determine
whether to convert to <a href="enum.Either.html#variant.Left" title="variant either::Either::Left"><code>Left</code></a> or <a href="enum.Either.html#variant.Right" title="variant either::Either::Right"><code>Right</code></a>.</p>
<p>The <a href="trait.IntoEither.html#method.into_either_with" title="method either::IntoEither::into_either_with"><code>into_either_with</code></a> method takes a
<a href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">predicate function</a> to determine whether to convert to <a href="enum.Either.html#variant.Left" title="variant either::Either::Left"><code>Left</code></a> or <a href="enum.Either.html#variant.Right" title="variant either::Either::Right"><code>Right</code></a>.</p>
</div></details><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.into_either" class="method"><a class="src rightside" href="../src/either/into_either.rs.html#29-35">source</a><h4 class="code-header">fn <a href="#method.into_either" class="fn">into_either</a>(self, into_left: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>) -&gt; <a class="enum" href="enum.Either.html" title="enum either::Either">Either</a>&lt;Self, Self&gt; <a href="#" class="tooltip" data-notable-ty="Either&lt;Self, Self&gt;"></a></h4></section></summary><div class="docblock"><p>Converts <code>self</code> into a <a href="enum.Either.html#variant.Left" title="variant either::Either::Left"><code>Left</code></a> variant of <a href="enum.Either.html" title="enum either::Either"><code>Either&lt;Self, Self&gt;</code></a>
if <code>into_left</code> is <code>true</code>.
Converts <code>self</code> into a <a href="enum.Either.html#variant.Right" title="variant either::Either::Right"><code>Right</code></a> variant of <a href="enum.Either.html" title="enum either::Either"><code>Either&lt;Self, Self&gt;</code></a>
otherwise.</p>
<h5 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>either::{IntoEither, Left, Right};
<span class="kw">let </span>x = <span class="number">0</span>;
<span class="macro">assert_eq!</span>(x.into_either(<span class="bool-val">true</span>), Left(x));
<span class="macro">assert_eq!</span>(x.into_either(<span class="bool-val">false</span>), Right(x));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.into_either_with" class="method"><a class="src rightside" href="../src/either/into_either.rs.html#55-61">source</a><h4 class="code-header">fn <a href="#method.into_either_with" class="fn">into_either_with</a>&lt;F&gt;(self, into_left: F) -&gt; <a class="enum" href="enum.Either.html" title="enum either::Either">Either</a>&lt;Self, Self&gt; <a href="#" class="tooltip" data-notable-ty="Either&lt;Self, Self&gt;"></a><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&amp;Self</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a>,</div></h4></section></summary><div class="docblock"><p>Converts <code>self</code> into a <a href="enum.Either.html#variant.Left" title="variant either::Either::Left"><code>Left</code></a> variant of <a href="enum.Either.html" title="enum either::Either"><code>Either&lt;Self, Self&gt;</code></a>
if <code>into_left(&amp;self)</code> returns <code>true</code>.
Converts <code>self</code> into a <a href="enum.Either.html#variant.Right" title="variant either::Either::Right"><code>Right</code></a> variant of <a href="enum.Either.html" title="enum either::Either"><code>Either&lt;Self, Self&gt;</code></a>
otherwise.</p>
<h5 id="examples-1"><a class="doc-anchor" href="#examples-1">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>either::{IntoEither, Left, Right};
<span class="kw">fn </span>is_even(x: <span class="kw-2">&amp;</span>u8) -&gt; bool {
x % <span class="number">2 </span>== <span class="number">0
</span>}
<span class="kw">let </span>x = <span class="number">0</span>;
<span class="macro">assert_eq!</span>(x.into_either_with(is_even), Left(x));
<span class="macro">assert_eq!</span>(x.into_either_with(|x| !is_even(x)), Right(x));</code></pre></div>
</div></details></div><h2 id="object-safety" class="section-header">Object Safety<a href="#object-safety" class="anchor">§</a></h2><div class="object-safety-info">This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.80.0/reference/items/traits.html#object-safety">object safe</a>.</div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><section id="impl-IntoEither-for-T" class="impl"><a class="src rightside" href="../src/either/into_either.rs.html#64">source</a><a href="#impl-IntoEither-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="trait.IntoEither.html" title="trait either::IntoEither">IntoEither</a> for T</h3></section></div><script src="../trait.impl/either/into_either/trait.IntoEither.js" async></script><script type="text/json" id="notable-traits-data">{"Either<Self, Self>":"<h3>Notable traits for <code><a class=\"enum\" href=\"enum.Either.html\" title=\"enum either::Either\">Either</a>&lt;L, R&gt;</code></h3><pre><code><div class=\"where\">impl&lt;L, R&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a> for <a class=\"enum\" href=\"enum.Either.html\" title=\"enum either::Either\">Either</a>&lt;L, R&gt;<div class=\"where\">where\n L: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>,\n R: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html\" title=\"trait core::future::future::Future\">Future</a>&lt;Output = L::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>&gt;,</div></div><div class=\"where\"> type <a href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" class=\"associatedtype\">Output</a> = L::<a class=\"associatedtype\" href=\"https://doc.rust-lang.org/1.80.0/core/future/future/trait.Future.html#associatedtype.Output\" title=\"type core::future::future::Future::Output\">Output</a>;</div><div class=\"where\">impl&lt;L, R&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a> for <a class=\"enum\" href=\"enum.Either.html\" title=\"enum either::Either\">Either</a>&lt;L, R&gt;<div class=\"where\">where\n L: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a>,\n R: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Write.html\" title=\"trait std::io::Write\">Write</a>,</div></div><div class=\"where\">impl&lt;L, R&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a> for <a class=\"enum\" href=\"enum.Either.html\" title=\"enum either::Either\">Either</a>&lt;L, R&gt;<div class=\"where\">where\n L: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a>,\n R: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/std/io/trait.Read.html\" title=\"trait std::io::Read\">Read</a>,</div></div><div class=\"where\">impl&lt;L, R&gt; <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\" title=\"trait core::iter::traits::iterator::Iterator\">Iterator</a> for <a class=\"enum\" href=\"enum.Either.html\" title=\"enum either::Either\">Either</a>&lt;L, R&gt;<div class=\"where\">where\n L: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\" title=\"trait core::iter::traits::iterator::Iterator\">Iterator</a>,\n R: <a class=\"trait\" href=\"https://doc.rust-lang.org/1.80.0/core/iter/traits/iterator/trait.Iterator.html\" title=\