<!DOCTYPE HTML> <html lang="en"> <head> <meta charset="UTF-8"> <title>Rust 程序设计语言 中文版</title> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> <meta name="description" content="Rust 程序设计语言 中文版"> <meta name="viewport" content="width=device-width, initial-scale=1"> <base href=""> <link rel="stylesheet" href="book.css"> <link href='https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800' rel='stylesheet' type='text/css'> <link rel="shortcut icon" href="favicon.png"> <!-- Font Awesome --> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css"> <link rel="stylesheet" href="highlight.css"> <link rel="stylesheet" href="tomorrow-night.css"> <!-- MathJax --> <script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script> <!-- Fetch JQuery from CDN but have a local fallback --> <script src="https://code.jquery.com/jquery-2.1.4.min.js"></script> <script> if (typeof jQuery == 'undefined') { document.write(unescape("%3Cscript src='jquery.js'%3E%3C/script%3E")); } </script> </head> <body class="light"> <!-- Set the theme before any content is loaded, prevents flash --> <script type="text/javascript"> var theme = localStorage.getItem('theme'); if (theme == null) { theme = 'light'; } $('body').removeClass().addClass(theme); </script> <!-- Hide / unhide sidebar before it is displayed --> <script type="text/javascript"> var sidebar = localStorage.getItem('sidebar'); if (sidebar === "hidden") { $("html").addClass("sidebar-hidden") } else if (sidebar === "visible") { $("html").addClass("sidebar-visible") } </script> <div id="sidebar" class="sidebar"> <ul class="chapter"><li><a href="ch01-00-introduction.html"><strong>1.</strong> 介绍</a></li><li><ul class="section"><li><a href="ch01-01-installation.html"><strong>1.1.</strong> 安装</a></li><li><a href="ch01-02-hello-world.html"><strong>1.2.</strong> Hello, World!</a></li></ul></li><li><a href="ch02-00-guessing-game-tutorial.html"><strong>2.</strong> 猜猜看教程</a></li><li><a href="ch03-00-common-programming-concepts.html"><strong>3.</strong> 通用编程概念</a></li><li><ul class="section"><li><a href="ch03-01-variables-and-mutability.html"><strong>3.1.</strong> 变量和可变性</a></li><li><a href="ch03-02-data-types.html"><strong>3.2.</strong> 数据类型</a></li><li><a href="ch03-03-how-functions-work.html"><strong>3.3.</strong> 函数如何工作</a></li><li><a href="ch03-04-comments.html"><strong>3.4.</strong> 注释</a></li><li><a href="ch03-05-control-flow.html"><strong>3.5.</strong> 控制流</a></li></ul></li><li><a href="ch04-00-understanding-ownership.html" class="active"><strong>4.</strong> 认识所有权</a></li><li><ul class="section"><li><a href="ch04-01-what-is-ownership.html"><strong>4.1.</strong> 什么是所有权</a></li><li><a href="ch04-02-references-and-borrowing.html"><strong>4.2.</strong> 引用 & 借用</a></li><li><a href="ch04-03-slices.html"><strong>4.3.</strong> Slices</a></li></ul></li></ul> </div> <div id="page-wrapper" class="page-wrapper"> <div class="page"> <div id="menu-bar" class="menu-bar"> <div class="left-buttons"> <i id="sidebar-toggle" class="fa fa-bars"></i> <i id="theme-toggle" class="fa fa-paint-brush"></i> </div> <h1 class="menu-title">Rust 程序设计语言 中文版</h1> <div class="right-buttons"> <i id="print-button" class="fa fa-print" title="Print this book"></i> </div> </div> <div id="content" class="content"> <h1>认识所有权</h1> <blockquote> <p><a href="https://github.com/rust-lang/book/blob/master/src/ch04-00-understanding-ownership.md">ch04-00-understanding-ownership.md</a> <br> commit 759067b651a48a4a66485fe0876d318d398fb4fe</p> </blockquote> <p>所有权(系统)是 Rust 最独特的功能,它令 Rust 可以无需垃圾回收(garbage collector)就能保障内存安全。因此,理解 Rust 中所有权如何工作是十分重要的。本章我们将讲到所有权以及相关功能:借用、slices 以及 Rust 如何在内存中安排数据。</p> </div> <!-- Mobile navigation buttons --> <a href="ch03-05-control-flow.html" class="mobile-nav-chapters previous"> <i class="fa fa-angle-left"></i> </a> <a href="ch04-01-what-is-ownership.html" class="mobile-nav-chapters next"> <i class="fa fa-angle-right"></i> </a> </div> <a href="ch03-05-control-flow.html" class="nav-chapters previous" title="You can navigate through the chapters using the arrow keys"> <i class="fa fa-angle-left"></i> </a> <a href="ch04-01-what-is-ownership.html" class="nav-chapters next" title="You can navigate through the chapters using the arrow keys"> <i class="fa fa-angle-right"></i> </a> </div> <!-- Local fallback for Font Awesome --> <script> if ($(".fa").css("font-family") !== "FontAwesome") { $('<link rel="stylesheet" type="text/css" href="_FontAwesome/css/font-awesome.css">').prependTo('head'); 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