<!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 `convert` mod in crate `core`."><meta name="keywords" content="rust, rustlang, rust-lang, convert"><title>core::convert - 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><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc mod"><!--[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">☰</div><a href='../../core/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a><p class='location'>Module convert</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#traits">Traits</a></li></ul></div><p class='location'><a href='../index.html'>core</a></p><script>window.sidebarCurrent = {name: 'convert', ty: 'mod', 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"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><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='in-band'>Module <a href='../index.html'>core</a>::<wbr><a class="mod" href=''>convert</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/core/convert.rs.html#11-453' title='goto source code'>[src]</a></span></h1><div class='docblock'><p>Traits for conversions between types.</p>
<p>The traits in this module provide a general way to talk about conversions
from one type to another. They follow the standard Rust conventions of
<code>as</code>/<code>into</code>/<code>from</code>.</p>
<p>Like many traits, these are often used as bounds for generic functions, to
support arguments of multiple types.</p>
<ul>
<li>Implement the <code>As*</code> traits for reference-to-reference conversions</li>
<li>Implement the <a href="trait.Into.html"><code>Into</code></a> trait when you want to consume the value in the conversion</li>
<li>The <a href="trait.From.html"><code>From</code></a> trait is the most flexible, useful for value <em>and</em> reference conversions</li>
<li>The <a href="trait.TryFrom.html"><code>TryFrom</code></a> and <a href="trait.TryInto.html"><code>TryInto</code></a> traits behave like <a href="trait.From.html"><code>From</code></a> and <a href="trait.Into.html"><code>Into</code></a>, but allow for the
conversion to fail</li>
</ul>
<p>As a library author, you should prefer implementing <a href="trait.From.html"><code>From<T></code></a> or
<a href="trait.TryFrom.html"><code>TryFrom<T></code></a> rather than <a href="trait.Into.html"><code>Into<U></code></a> or <a href="trait.TryInto.html"><code>TryInto<U></code></a>,
as <a href="trait.From.html"><code>From</code></a> and <a href="trait.TryFrom.html"><code>TryFrom</code></a> provide greater flexibility and offer
equivalent <a href="trait.Into.html"><code>Into</code></a> or <a href="trait.TryInto.html"><code>TryInto</code></a> implementations for free, thanks to a
blanket implementation in the standard library.</p>
<h1 id="generic-implementations" class="section-header"><a href="#generic-implementations">Generic Implementations</a></h1>
<ul>
<li><a href="trait.AsRef.html"><code>AsRef</code></a> and <a href="trait.AsMut.html"><code>AsMut</code></a> auto-dereference if the inner type is a reference</li>
<li><a href="trait.From.html"><code>From</code></a><code><U> for T</code> implies <a href="trait.Into.html"><code>Into</code></a><code><T> for U</code></li>
<li><a href="trait.TryFrom.html"><code>TryFrom</code></a><code><U> for T</code> implies <a href="trait.TryInto.html"><code>TryInto</code></a><code><T> for U</code></li>
<li><a href="trait.From.html"><code>From</code></a> and <a href="trait.Into.html"><code>Into</code></a> are reflexive, which means that all types can
<code>into</code> themselves and <code>from</code> themselves</li>
</ul>
<p>See each trait for usage examples.</p>
</div><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
<table>
<tr class=' module-item'>
<td><a class="trait" href="trait.AsMut.html"
title='trait core::convert::AsMut'>AsMut</a></td>
<td class='docblock-short'>
<p>A cheap, mutable reference-to-mutable reference conversion.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="trait" href="trait.AsRef.html"
title='trait core::convert::AsRef'>AsRef</a></td>
<td class='docblock-short'>
<p>A cheap reference-to-reference conversion. Used to convert a value to a
reference value within generic code.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="trait" href="trait.From.html"
title='trait core::convert::From'>From</a></td>
<td class='docblock-short'>
<p>Simple and safe type conversions in to <code>Self</code>. It is the reciprocal of
<code>Into</code>.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="trait" href="trait.Into.html"
title='trait core::convert::Into'>Into</a></td>
<td class='docblock-short'>
<p>A conversion that consumes <code>self</code>, which may or may not be expensive. The
reciprocal of <a href="trait.From.html"><code>From</code></a>.</p>
</td>
</tr>
<tr class='unstable module-item'>
<td><a class="trait" href="trait.TryFrom.html"
title='trait core::convert::TryFrom'>TryFrom</a></td>
<td class='docblock-short'>
[<div class='stab unstable'>Experimental</div>] <p>Attempt to construct <code>Self</code> via a conversion.</p>
</td>
</tr>
<tr class='unstable module-item'>
<td><a class="trait" href="trait.TryInto.html"
title='trait core::convert::TryInto'>TryInto</a></td>
<td class='docblock-short'>
[<div class='stab unstable'>Experimental</div>] <p>An attempted conversion that consumes <code>self</code>, which may or may not be
expensive.</p>
</td>
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