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<ol class="chapter"><li class="chapter-item expanded affix "><a href="title-page.html">Rust 程序设计语言</a></li><li class="chapter-item expanded affix "><a href="foreword.html" class="active">前言</a></li><li class="chapter-item expanded affix "><a href="ch00-00-introduction.html">简介</a></li><li class="chapter-item expanded "><a href="ch01-00-getting-started.html"><strong aria-hidden="true">1.</strong> 入门指南</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="ch01-01-installation.html"><strong aria-hidden="true">1.1.</strong> 安装</a></li><li class="chapter-item expanded "><a href="ch01-02-hello-world.html"><strong aria-hidden="true">1.2.</strong> Hello, World!</a></li><li class="chapter-item expanded "><a href="ch01-03-hello-cargo.html"><strong aria-hidden="true">1.3.</strong> Hello, Cargo!</a></li></ol></li><li class="chapter-item expanded "><a href="ch02-00-guessing-game-tutorial.html"><strong aria-hidden="true">2.</strong> 写个猜数字游戏</a></li><li class="chapter-item expanded "><a href="ch03-00-common-programming-concepts.html"><strong aria-hidden="true">3.</strong> 常见编程概念</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="ch03-01-variables-and-mutability.html"><strong aria-hidden="true">3.1.</strong> 变量与可变性</a></li><li class="chapter-item expanded "><a href="ch03-02-data-types.html"><strong aria-hidden="true">3.2.</strong> 数据类型</a></li><li class="chapter-item expanded "><a href="ch03-03-how-functions-work.html"><strong aria-hidden="true">3.3.</strong> 函数</a></li><li class="chapter-item expanded "><a href="ch03-04-comments.html"><strong aria-hidden="true">3.4.</strong> 注释</a></li><li class="chapter-item expanded "><a href="ch03-05-control-flow.html"><strong aria-hidden="true">3.5.</strong> 控制流</a></li></ol></li><li class="chapter-item expanded "><a href="ch04-00-understanding-ownership.html"><strong aria-hidden="true">4.</strong> 认识所有权</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="ch04-01-what-is-ownership.html"><strong aria-hidden="true">4.1.</strong> 什么是所有权？</a></li><li class="chapter-item expanded "><a href="ch04-02-references-and-borrowing.html"><strong aria-hidden="true">4.2.</strong> 引用与借用</a></li><li class="chapter-item expanded "><a href="ch04-03-slices.html"><strong aria-hidden="true">4.3.</strong> Slice 类型</a></li></ol></li><li class="chapter-item expanded "><a href="ch05-00-structs.html"><strong aria-hidden="true">5.</strong> 使用结构体组织相关联的数据</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="ch05-01-defining-structs.html"><strong aria-hidden="true">5.1.</strong> 结构体的定义和实例化</a></li><li class="chapter-item expanded "><a href="ch05-02-example-structs.html"><strong aria-hidden="true">5.2.</strong> 结构体示例程序</a></li><li class="chapter-item expanded "><a href="ch05-03-method-syntax.html"><strong aria-hidden="true">5.3.</strong> 方法语法</a></li></ol></li><li class="chapter-item expanded "><a href="ch06-00-enums.html"><strong aria-hidden="true">6.</strong> 枚举和模式匹配</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="ch06-01-defining-an-enum.html"><strong aria-hidden="true">6.1.</strong> 枚举的定义</a></li><li class="chapter-item expanded "><a href="ch06-02-match.html"><strong aria-hidden="true">6.2.</strong> match 控制流结构</a></li><li class="chapter-item expanded "><a href="ch06-03-if-let.html"><strong aria-hidden="true">6.3.</strong> if let 简洁控制流</a></li></ol></li><li class="chapter-item expanded "><a href="ch07-00-managing-growing-projects-with-packages-crates-and-modules.html"><strong aria-hidden="true">7.</strong> 使用包、Crate 和模块管理不断增长的项目</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="ch07-01-packages-and-crates.html"><strong aria-hidden="true">7.1.</strong> 包和 Crate</a></li><li class="chapter-item
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<h1 id="前言"><a class="header" href="#前言">前言</a></h1>
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<blockquote>
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<p><a href="https://github.com/rust-lang/book/blob/main/src/foreword.md">foreword.md</a>
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<br>
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commit 1fedfc4b96c2017f64ecfcf41a0a07e2e815f24f</p>
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</blockquote>
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<p>Rust 程序设计语言的本质实际在于 <strong>赋能</strong>（<em>empowerment</em>）：无论你现在编写的是何种代码，Rust 能让你在更为广泛的编程领域走得更远，写出自信。（这一点并不显而易见）</p>
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<p>举例来说，那些“系统层面”的工作涉及内存管理、数据表示和并发等底层细节。从传统角度来看，这是一个神秘的编程领域，只为浸润多年的极少数人所触及，也只有他们能避开那些臭名昭著的陷阱。即使谨慎的实践者，亦唯恐代码出现漏洞、崩溃或损坏。</p>
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<p>Rust 破除了这些障碍：它消除了旧的陷阱，并提供了伴你一路同行的友好、精良的工具。想要 “深入” 底层控制的程序员可以使用 Rust，无需时刻担心出现崩溃或安全漏洞，也无需因为工具链不靠谱而被迫去了解其中的细节。更妙的是，语言设计本身会自然而然地引导你编写出可靠的代码，并且运行速度和内存使用上都十分高效。</p>
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<p>已经在从事编写底层代码的程序员可以使用 Rust 来提升信心。例如，在 Rust 中引入并行是相对低风险的操作，因为编译器会替你找到经典的错误。同时你可以自信地采取更加激进的优化，而不会意外引入崩溃或漏洞。</p>
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<p>但 Rust 并不局限于底层系统编程。它表达力强、写起来舒适，让人能够轻松地编写出命令行应用、网络服务器等各种类型的代码——在本书中就有这两者的简单示例。使用 Rust 能让你把在一个领域中学习的技能延伸到另一个领域：你可以通过编写网页应用来学习 Rust，接着将同样的技能应用到你的 Raspberry Pi（树莓派）上。</p>
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<p>本书全面介绍了 Rust 为用户赋予的能力。其内容平易近人，致力于帮助你提升 Rust 的知识，并且提升你作为程序员整体的理解与自信。欢迎你加入 Rust 社区，让我们准备深入学习 Rust 吧！</p>
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<p>—— Nicholas Matsakis 和 Aaron Turon</p>
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