mirror of
https://github.com/KaiserY/trpl-zh-cn
synced 2024-11-09 00:43:59 +08:00
131 lines
9.4 KiB
HTML
131 lines
9.4 KiB
HTML
<!DOCTYPE HTML>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="UTF-8">
|
||
<title>模块 - Rust 程序设计语言 简体中文版</title>
|
||
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
|
||
<meta name="description" content="Rust 程序设计语言 简体中文版">
|
||
<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"><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><li><a href="ch05-00-structs.html"><strong>5.</strong> 结构体</a></li><li><ul class="section"><li><a href="ch05-01-method-syntax.html"><strong>5.1.</strong> 方法语法</a></li></ul></li><li><a href="ch06-00-enums.html"><strong>6.</strong> 枚举和模式匹配</a></li><li><ul class="section"><li><a href="ch06-01-defining-an-enum.html"><strong>6.1.</strong> 定义枚举</a></li><li><a href="ch06-02-match.html"><strong>6.2.</strong> <code>match</code>控制流运算符</a></li><li><a href="ch06-03-if-let.html"><strong>6.3.</strong> <code>if let</code>简单控制流</a></li></ul></li><li><a href="ch07-00-modules.html" class="active"><strong>7.</strong> 模块</a></li><li><ul class="section"><li><a href="ch07-01-mod-and-the-filesystem.html"><strong>7.1.</strong> <code>mod</code>和文件系统</a></li><li><a href="ch07-02-controlling-visibility-with-pub.html"><strong>7.2.</strong> 使用<code>pub</code>控制可见性</a></li><li><a href="ch07-03-importing-names-with-use.html"><strong>7.3.</strong> 使用<code>use</code>导入命名</a></li></ul></li><li><a href="ch08-00-common-collections.html"><strong>8.</strong> 通用集合类型</a></li><li><ul class="section"><li><a href="ch08-01-vectors.html"><strong>8.1.</strong> vector</a></li><li><a href="ch08-02-strings.html"><strong>8.2.</strong> 字符串</a></li><li><a href="ch08-03-hash-maps.html"><strong>8.3.</strong> 哈希 map</a></li></ul></li><li><a href="ch09-00-error-handling.html"><strong>9.</strong> 错误处理</a></li><li><ul class="section"><li><a href="ch09-01-unrecoverable-errors-with-panic.html"><strong>9.1.</strong> <code>panic!</code>与不可恢复的错误</a></li><li><a href="ch09-02-recoverable-errors-with-result.html"><strong>9.2.</strong> <code>Result</code>与可恢复的错误</a></li><li><a href="ch09-03-to-panic-or-not-to-panic.html"><strong>9.3.</strong> <code>panic!</code>还是不<code>panic!</code></a></li></ul></li><li><a href="ch10-00-generics.html"><strong>10.</strong> 泛型、trait 和生命周期</a></li><li><ul class="section"><li><a href="ch10-01-syntax.html"><strong>10.1.</strong> 泛型数据类型</a></li><li><a href="ch10-02-traits.html"><strong>10.2.</strong> trait：定义共享的行为</a></li><li><a href="ch10-03-lifetime-syntax.html"><strong>10.3.</strong> 生命周期与引用有效性</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 简体中文版</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">
|
||
<a class="header" href="#模块" name="模块"><h1>模块</h1></a>
|
||
<blockquote>
|
||
<p><a href="https://github.com/rust-lang/book/blob/master/src/ch07-00-modules.md">ch07-00-modules.md</a>
|
||
<br>
|
||
commit e2a129961ae346f726f8b342455ec2255cdfed68</p>
|
||
</blockquote>
|
||
<p>在你刚开始编写 Rust 程序时，代码可能仅仅位于<code>main</code>函数里。随着代码数量的增长，最终你会将功能移动到其他函数中，为了复用也为了更好的组织。通过将代码分隔成更小的块，每一个块代码自身就更易于理解。不过当你发现自己有太多的函数了该怎么办呢？Rust 有一个模块系统来处理编写可复用代码同时保持代码组织度的问题。</p>
|
||
<p>就跟你将代码行提取到一个函数中一样，也可以将函数（和其他类似结构体和枚举的代码）提取到不同模块中。<strong>模块</strong>（<em>module</em>）是一个包含函数或类型定义的命名空间，你可以选择这些定义是能（公有）还是不能（私有）在其模块外可见。这是一个模块如何工作的概括：</p>
|
||
<ul>
|
||
<li>使用<code>mod</code>关键字声明模块</li>
|
||
<li>默认所有内容都是私有的（包括模块自身）。可以使用<code>pub</code>关键字将其变成公有并在其命名空间外可见。</li>
|
||
<li><code>use</code>关键字允许引入模块、或模块中的定义到作用域中以便于引用他们。</li>
|
||
</ul>
|
||
<p>我们会逐一了解这每一部分并学习如何将他们结合在一起。</p>
|
||
|
||
</div>
|
||
|
||
<!-- Mobile navigation buttons -->
|
||
|
||
<a href="ch06-03-if-let.html" class="mobile-nav-chapters previous">
|
||
<i class="fa fa-angle-left"></i>
|
||
</a>
|
||
|
||
|
||
|
||
<a href="ch07-01-mod-and-the-filesystem.html" class="mobile-nav-chapters next">
|
||
<i class="fa fa-angle-right"></i>
|
||
</a>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
<a href="ch06-03-if-let.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="ch07-01-mod-and-the-filesystem.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');
|
||
}
|
||
</script>
|
||
|
||
<!-- Livereload script (if served using the cli tool) -->
|
||
|
||
|
||
<script src="highlight.js"></script>
|
||
<script src="book.js"></script>
|
||
</body>
|
||
</html>
|