<!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"> <title>Strings</title> <link rel="stylesheet" type="text/css" href="../rust.css"> <link rel="shortcut icon" href="https://www.rust-lang.org/favicon.ico"> </head> <body class="rustdoc"> <!--[if lte IE 8]> <div class="warning"> This old browser is unsupported and will most likely display funky things. </div> <![endif]--> <div id="versioninfo"> <img src="https://www.rust-lang.org/logos/rust-logo-32x32-blk.png" width="32" height="32" alt="Rust logo"><br> <span class="white-sticker"><a href="https://www.rust-lang.org">Rust</a> 1.27.1</span><br> <a href="https://github.com/rust-lang/rust/commit/" class="hash white-sticker"></a> </div> <h1 class="title">Strings</h1> <p><small>There is a new edition of the book and this is an old link.</small></p> <blockquote> <p>A <code>String</code> is allocated on the heap and as such is able to store an amount of text that is unknown to us at compile time. You can create a <code>String</code> from a string literal using the <code>from</code> function. A <em>string slice</em> is a reference to part of a <code>String</code>.</p> </blockquote> <pre class="rust rust-example-rendered"> <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">from</span>(<span class="string">"hello world"</span>); <span class="kw">let</span> <span class="ident">hello</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">s</span>[<span class="number">0</span>..<span class="number">5</span>]; <span class="kw">let</span> <span class="ident">world</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">s</span>[<span class="number">6</span>..<span class="number">11</span>];<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Afn%20main()%20%7B%0Alet%20s%20%3D%20String%3A%3Afrom(%22hello%20world%22)%3B%0A%0Alet%20hello%20%3D%20%26s%5B0..5%5D%3B%0Alet%20world%20%3D%20%26s%5B6..11%5D%3B%0A%7D">Run</a></pre> <hr /> <p>Here are the relevant sections in the new and old books:</p> <ul> <li><strong><a href="second-edition/ch08-02-strings.html">In second edition: Ch 8.02 — Strings</a></strong></li> <li><a href="second-edition/ch04-01-what-is-ownership.html#the-string-type">In second edition: Ch 4.01 — Ownership, section The String Type</a></li> <li><a href="second-edition/ch04-03-slices.html#string-slices">In second edition: Ch 4.03 — Slices, section String Slices</a></li> <li><small><a href="first-edition/strings.html">In the first edition: Ch 3.17 — Strings</a></small></li> </ul> <footer><p> Copyright © 2011 The Rust Project Developers. Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a> or the <a href="https://opensource.org/licenses/MIT">MIT license</a>, at your option. </p><p> This file may not be copied, modified, or distributed except according to those terms. </p></footer> </body> </html>