<!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="Source to the Rust file `libstd/prelude/v1.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>v1.rs.html -- source</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 source"><!--[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='../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a></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"><pre class="line-numbers"><span id="1"> 1</span>
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<span class="comment">// Copyright 2013 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="doccomment">//! The first version of the prelude of The Rust Standard Library.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! See the [module-level documentation](../index.html) for more.</span>
<span class="attribute">#![<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="comment">// Re-exported core operators</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">marker</span>::{<span class="ident">Copy</span>, <span class="ident">Send</span>, <span class="ident">Sized</span>, <span class="ident">Sync</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">ops</span>::{<span class="ident">Drop</span>, <span class="ident">Fn</span>, <span class="ident">FnMut</span>, <span class="ident">FnOnce</span>};
<span class="comment">// Re-exported functions</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">mem</span>::<span class="ident">drop</span>;
<span class="comment">// Re-exported types and traits</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">boxed</span>::<span class="ident">Box</span>;
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">borrow</span>::<span class="ident">ToOwned</span>;
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">clone</span>::<span class="ident">Clone</span>;
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">cmp</span>::{<span class="ident">PartialEq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Eq</span>, <span class="ident">Ord</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">convert</span>::{<span class="ident">AsRef</span>, <span class="ident">AsMut</span>, <span class="ident">Into</span>, <span class="ident">From</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">default</span>::<span class="ident">Default</span>;
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">iter</span>::{<span class="ident">Iterator</span>, <span class="ident">Extend</span>, <span class="ident">IntoIterator</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">iter</span>::{<span class="ident">DoubleEndedIterator</span>, <span class="ident">ExactSizeIterator</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">option</span>::<span class="prelude-ty">Option</span>::{<span class="self">self</span>, <span class="prelude-val">Some</span>, <span class="prelude-val">None</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">result</span>::<span class="prelude-ty">Result</span>::{<span class="self">self</span>, <span class="prelude-val">Ok</span>, <span class="prelude-val">Err</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">slice</span>::<span class="ident">SliceConcatExt</span>;
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">string</span>::{<span class="ident">String</span>, <span class="ident">ToString</span>};
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">no_inline</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="ident">vec</span>::<span class="ident">Vec</span>;
</pre>
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