gopl-zh.github.com/appendix/appendix-a-errata.html

273 lines
34 KiB
HTML
Raw Normal View History

<!DOCTYPE HTML>
<html lang="zh" class="sidebar-visible no-js light">
<head>
<!-- Book generated using mdBook -->
<meta charset="UTF-8">
<title>附录A原文勘误 - Go语言圣经</title>
<!-- Custom HTML head -->
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="description" content="&lt;The Go Programming Language&gt;中文版">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="theme-color" content="#ffffff" />
<link rel="icon" href="../favicon.svg">
<link rel="shortcut icon" href="../favicon.png">
<link rel="stylesheet" href="../css/variables.css">
<link rel="stylesheet" href="../css/general.css">
<link rel="stylesheet" href="../css/chrome.css">
<link rel="stylesheet" href="../css/print.css" media="print">
<!-- Fonts -->
<link rel="stylesheet" href="../FontAwesome/css/font-awesome.css">
<link rel="stylesheet" href="../fonts/fonts.css">
<!-- Highlight.js Stylesheets -->
<link rel="stylesheet" href="../highlight.css">
<link rel="stylesheet" href="../tomorrow-night.css">
<link rel="stylesheet" href="../ayu-highlight.css">
<!-- Custom theme stylesheets -->
<link rel="stylesheet" href="../style.css">
</head>
<body>
<!-- Provide site root to javascript -->
<script type="text/javascript">
var path_to_root = "../";
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
</script>
<!-- Work around some values being stored in localStorage wrapped in quotes -->
<script type="text/javascript">
try {
var theme = localStorage.getItem('mdbook-theme');
var sidebar = localStorage.getItem('mdbook-sidebar');
if (theme.startsWith('"') && theme.endsWith('"')) {
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
}
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
}
} catch (e) { }
</script>
<!-- Set the theme before any content is loaded, prevents flash -->
<script type="text/javascript">
var theme;
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
if (theme === null || theme === undefined) { theme = default_theme; }
var html = document.querySelector('html');
html.classList.remove('no-js')
html.classList.remove('light')
html.classList.add(theme);
html.classList.add('js');
</script>
<!-- Hide / unhide sidebar before it is displayed -->
<script type="text/javascript">
var html = document.querySelector('html');
var sidebar = 'hidden';
if (document.body.clientWidth >= 1080) {
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
sidebar = sidebar || 'visible';
}
html.classList.remove('sidebar-visible');
html.classList.add("sidebar-" + sidebar);
</script>
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
<div class="sidebar-scrollbox">
<ol class="chapter"><li class="chapter-item expanded affix "><a href="../index.html">Go语言圣经</a></li><li class="chapter-item expanded affix "><a href="../preface-zh.html">译者序</a></li><li class="chapter-item expanded affix "><a href="../preface.html">前言</a></li><li class="chapter-item expanded "><a href="../ch1/ch1.html"><strong aria-hidden="true">1.</strong> 入门</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../ch1/ch1-01.html"><strong aria-hidden="true">1.1.</strong> Hello, World</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-02.html"><strong aria-hidden="true">1.2.</strong> 命令行参数</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-03.html"><strong aria-hidden="true">1.3.</strong> 查找重复的行</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-04.html"><strong aria-hidden="true">1.4.</strong> GIF动画</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-05.html"><strong aria-hidden="true">1.5.</strong> 获取URL</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-06.html"><strong aria-hidden="true">1.6.</strong> 并发获取多个URL</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-07.html"><strong aria-hidden="true">1.7.</strong> Web服务</a></li><li class="chapter-item expanded "><a href="../ch1/ch1-08.html"><strong aria-hidden="true">1.8.</strong> 本章要点</a></li></ol></li><li class="chapter-item expanded "><a href="../ch2/ch2.html"><strong aria-hidden="true">2.</strong> 程序结构</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../ch2/ch2-01.html"><strong aria-hidden="true">2.1.</strong> 命名</a></li><li class="chapter-item expanded "><a href="../ch2/ch2-02.html"><strong aria-hidden="true">2.2.</strong> 声明</a></li><li class="chapter-item expanded "><a href="../ch2/ch2-03.html"><strong aria-hidden="true">2.3.</strong> 变量</a></li><li class="chapter-item expanded "><a href="../ch2/ch2-04.html"><strong aria-hidden="true">2.4.</strong> 赋值</a></li><li class="chapter-item expanded "><a href="../ch2/ch2-05.html"><strong aria-hidden="true">2.5.</strong> 类型</a></li><li class="chapter-item expanded "><a href="../ch2/ch2-06.html"><strong aria-hidden="true">2.6.</strong> 包和文件</a></li><li class="chapter-item expanded "><a href="../ch2/ch2-07.html"><strong aria-hidden="true">2.7.</strong> 作用域</a></li></ol></li><li class="chapter-item expanded "><a href="../ch3/ch3.html"><strong aria-hidden="true">3.</strong> 基础数据类型</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../ch3/ch3-01.html"><strong aria-hidden="true">3.1.</strong> 整型</a></li><li class="chapter-item expanded "><a href="../ch3/ch3-02.html"><strong aria-hidden="true">3.2.</strong> 浮点数</a></li><li class="chapter-item expanded "><a href="../ch3/ch3-03.html"><strong aria-hidden="true">3.3.</strong> 复数</a></li><li class="chapter-item expanded "><a href="../ch3/ch3-04.html"><strong aria-hidden="true">3.4.</strong> 布尔型</a></li><li class="chapter-item expanded "><a href="../ch3/ch3-05.html"><strong aria-hidden="true">3.5.</strong> 字符串</a></li><li class="chapter-item expanded "><a href="../ch3/ch3-06.html"><strong aria-hidden="true">3.6.</strong> 常量</a></li></ol></li><li class="chapter-item expanded "><a href="../ch4/ch4.html"><strong aria-hidden="true">4.</strong> 复合数据类型</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../ch4/ch4-01.html"><strong aria-hidden="true">4.1.</strong> 数组</a></li><li class="chapter-item expanded "><a href="../ch4/ch4-02.html"><strong aria-hidden="true">4.2.</strong> Slice</a></li><li class="chapter-item expanded "><a href="../ch4/ch4-03.html"><strong aria-hidden="true">4.3.</strong> Map</a></li><li class="chapter-item expanded "><a href="../ch4/ch4-04.html"><strong aria-hidden="true">4.4.</strong> 结构体</a></li><li class="chapter-item expanded "><a href="../ch4/ch4-05.html"><strong aria-hidden="true">4.5.</strong> JSON</
<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
</nav>
<div id="page-wrapper" class="page-wrapper">
<div class="page">
<div id="menu-bar-hover-placeholder"></div>
<div id="menu-bar" class="menu-bar sticky bordered">
<div class="left-buttons">
<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
<i class="fa fa-bars"></i>
</button>
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
<i class="fa fa-paint-brush"></i>
</button>
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
<li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
</ul>
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
<i class="fa fa-search"></i>
</button>
</div>
<h1 class="menu-title">Go语言圣经</h1>
<div class="right-buttons">
<a href="../print.html" title="Print this book" aria-label="Print this book">
<i id="print-button" class="fa fa-print"></i>
</a>
<a href="https://github.com/gopl-zh/gopl-zh.github.com" title="Git repository" aria-label="Git repository">
<i id="git-repository-button" class="fa fa-github"></i>
</a>
<a href="https://github.com/gopl-zh/gopl-zh.github.com/edit/master/./appendix/appendix-a-errata.md" title="Suggest an edit" aria-label="Suggest an edit">
<i id="git-edit-button" class="fa fa-edit"></i>
</a>
</div>
</div>
<div id="search-wrapper" class="hidden">
<form id="searchbar-outer" class="searchbar-outer">
<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
</form>
<div id="searchresults-outer" class="searchresults-outer hidden">
<div id="searchresults-header" class="searchresults-header"></div>
<ul id="searchresults">
</ul>
</div>
</div>
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
<script type="text/javascript">
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
});
</script>
<div id="content" class="content">
<!-- Page table of contents -->
<div class="sidetoc"><nav class="pagetoc"></nav></div>
<main>
<!-- 头部 -->
<ul dir="auto">
<li><em>Go语言圣经读书笔记(挖坑中...): <a href="https://github.com/chai2010/gopl-notes-zh">https://github.com/chai2010/gopl-notes-zh</a></em></li>
<li><em>凹语言(Go实现, 面向WASM设计): <a href="https://github.com/wa-lang/wa">https://github.com/wa-lang/wa</a></em></li>
</ul>
<hr>
<h2 id="附录aa-hrefhttpwwwgoplioerratahtml原文勘误a"><a class="header" href="#附录aa-hrefhttpwwwgoplioerratahtml原文勘误a">附录A<a href="http://www.gopl.io/errata.html">原文勘误</a></a></h2>
<p><strong>p.9, ¶2:</strong> for &quot;can compared&quot;, read &quot;can be compared&quot;. (Thanks to Antonio Macías Ojeda, 2015-10-22. Corrected in the second printing.)</p>
<p><strong>p.13:</strong> As printed, the <code>gopl.io/ch1/lissajous</code> program is deterministic, not random. We've added the statement below to the downloadable program so that it prints a pseudo-random image each time it is run. (Thanks to Randall McPherson, 2015-10-19.)</p>
<p><code>rand.Seed(time.Now().UTC().UnixNano())</code></p>
<p><strong>p.15, ¶2:</strong> For &quot;inner loop&quot;, read &quot;outer loop&quot;. (Thanks to Ralph Corderoy, 2015-11-28. Corrected in the third printing.)</p>
<p><strong>p.19, ¶2:</strong> For &quot;Go's libraries makes&quot;, read &quot;Go's library makes&quot;. (Thanks to Victor Farazdagi, 2015-11-30. Corrected in the third printing.)</p>
<p><strong>p.40, ¶4:</strong> For &quot;value of the underlying type&quot;, read &quot;value of an unnamed type with the same underlying type&quot;. (Thanks to Carlos Romero Brox, 2015-12-19.)</p>
<p><strong>p.40, ¶1:</strong> The paragraph should end with a period, not a comma. (Thanks to Victor Farazdagi, 2015-11-30. Corrected in the third printing.)</p>
<p><strong>p.43, ¶3:</strong> Import declarations are explained in §10.4, not §10.3. (Thanks to Peter Jurgensen, 2015-11-21. Corrected in the third printing.)</p>
<p><strong>p.48:</strong> <code>f.ReadByte()</code> serves as an example of a reference to f, but <code>*os.File</code> has no such method. For &quot;ReadByte&quot;, read &quot;Stat&quot;, four times. (Thanks to Peter Olsen, 2016-01-06. Corrected in the third printing.)</p>
<p><strong>p.52, ¶2:</strong> for &quot;an synonym&quot;, read &quot;a synonym&quot;, twice. (Corrected in the second printing.)</p>
<p><strong>p.52, ¶9:</strong> for &quot;The integer arithmetic operators&quot;, read &quot;The arithmetic operators&quot;. (Thanks to Yoshiki Shibata, 2015-12-20.)</p>
<p><strong>p.68:</strong> the table of UTF-8 encodings is missing a bit from each first byte. The corrected table is shown below. (Thanks to Akshay Kumar, 2015-11-02. Corrected in the second printing.)</p>
<pre><code>0xxxxxxx runes 0127 (ASCII)
110xxxxx 10xxxxxx 1282047 (values &lt;128 unused)
1110xxxx 10xxxxxx 10xxxxxx 204865535 (values &lt;2048 unused)
11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 655360x10ffff (other values unused)
</code></pre>
<p><strong>p.73, ¶1:</strong> For &quot;a exercise&quot;, read &quot;an exercise&quot;. (Thanks to vrajmohan, 2015-12-28.)</p>
<p><strong>p.74:</strong> the comment in <code>gopl.io/ch3/printints</code> should say <code>fmt.Sprint</code>, not <code>fmt.Sprintf</code>. (Corrected in the second printing.)</p>
<p><strong>p.75, ¶4:</strong> for &quot;%u&quot;, read &quot;%o&quot;. (Thanks to William Hannish, 2015-12-21.)</p>
<p><strong>p.76:</strong> the comment <code>// &quot;time.Duration 5m0s</code> should have a closing double-quotation mark. (Corrected in the second printing.)</p>
<p><strong>p.79, ¶4:</strong> &quot;When an untyped constant is assigned to a variable, as in the first statement below, or
appears on the right-hand side of a variable declaration with an explicit type, as in the other three statements, ...&quot; has it backwards: the <i>first</i> statement is a declaration; the other three are assignments. (Thanks to Yoshiki Shibata, 2015-11-09. Corrected in the third printing.)</p>
<p><strong>p.112:</strong> Exercise 4.11 calls for a &quot;CRUD&quot; (create, read, update, delete) tool for GitHub Issues. Since GitHub does not currently allow Issues to be deleted, for &quot;delete&quot;, read &quot;close&quot;. (Thanks to Yoshiki Shibata, 2016-01-18.)</p>
<p><strong>p.115:</strong> The anchor element in <code>gopl.io/ch4/issueshtml</code>'s template is missing a closing <code>&lt;/a&gt;</code> tag. (Thanks to Taj Khattra, 2016-01-19.)</p>
<p><strong>p.132, code display following ¶3:</strong> the final comment should read: <code>// compile error: can't assign func(int, int) int to func(int) int</code> (Thanks to Toni Suter, 2015-11-21. Corrected in the third printing.)</p>
<p><strong>p.160, ¶4:</strong> <code>For Get(&quot;item&quot;))</code>, read <code>Get(&quot;item&quot;)</code>. (Thanks to Yoshiki Shibata, 2016-02-01.)</p>
<p><strong>p.166, ¶2:</strong> for &quot;way&quot;, read &quot;a way&quot;. (Corrected in the third printing.)</p>
<p><strong>p.200, TestEval function:</strong> the format string in the final call to t.Errorf should format test.env with %v, not %s. (Thanks to Mitsuteru Sawa, 2015-12-07. Corrected in the third printing.)</p>
<p><strong>p.222, Exercise 8.1:</strong> The port numbers for <code>London</code> and <code>Tokyo</code> should be swapped in the final command to match the earlier commands. (Thanks to Kiyoshi Kamishima, 2016-01-08.)</p>
<p><strong>p.272, ¶3:</strong> for &quot;the request body&quot;, read &quot;the response body&quot;. (Thanks to <a href="https://github.com/cch123">曹春晖</a>, 2016-01-19.)</p>
<p><strong>p.288, code display following ¶4:</strong> In the import declaration, for <code>&quot;database/mysql&quot;</code>, read <code>&quot;database/sql&quot;</code>. (Thanks to Jose Colon Rodriguez, 2016-01-09.)</p>
<p><strong>p.347, Exercise 12.8:</strong> for &quot;like json.Marshal&quot;, read &quot;like json.Unmarshal&quot;. (Thanks to <a href="https://github.com/chai2010">chai2010</a>, 2016-01-01.)</p>
<p><strong>p.362:</strong> the <code>gopl.io/ch13/bzip</code> program does not comply with the <a href="https://github.com/golang/proposal/blob/master/design/12416-cgo-pointers.md">proposed rules for passing pointers between Go and C code</a> because the C function <code>bz2compress</code> temporarily stores a Go pointer (in) into the Go heap (the <code>bz_stream</code> variable). The <code>bz_stream</code> variable should be allocated, and explicitly freed after the call to <code>BZ2_bzCompressEnd</code>, by C functions. (Thanks to Joe Tsai, 2015-11-18. Corrected in the third printing.)</p>
<!-- 公众号 -->
<hr>
<table>
<tr>
<td>
<img width="222px" src="https://chai2010.cn/advanced-go-programming-book/css.png">
</td>
<td>
<img width="222px" src="https://chai2010.cn/advanced-go-programming-book/cch.png">
</td>
</tr>
</table>
<div id="giscus-container"></div>
<footer class="page-footer">
<span>© 2015-2016 | <a href="https://github.com/gopl-zh"> Go语言圣经中文版</a>, 仅学习交流使用</span>
</footer>
</main>
<nav class="nav-wrapper" aria-label="Page navigation">
<!-- Mobile navigation buttons -->
<a rel="prev" href="../appendix/appendix.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
<i class="fa fa-angle-left"></i>
</a>
<a rel="next" href="../appendix/appendix-b-author.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
<i class="fa fa-angle-right"></i>
</a>
<div style="clear: both"></div>
</nav>
</div>
</div>
<nav class="nav-wide-wrapper" aria-label="Page navigation">
<a rel="prev" href="../appendix/appendix.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
<i class="fa fa-angle-left"></i>
</a>
<a rel="next" href="../appendix/appendix-b-author.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
<i class="fa fa-angle-right"></i>
</a>
</nav>
</div>
<script type="text/javascript">
window.playground_copyable = true;
</script>
<script src="../elasticlunr.min.js" type="text/javascript" charset="utf-8"></script>
<script src="../mark.min.js" type="text/javascript" charset="utf-8"></script>
<script src="../searcher.js" type="text/javascript" charset="utf-8"></script>
<script src="../clipboard.min.js" type="text/javascript" charset="utf-8"></script>
<script src="../highlight.js" type="text/javascript" charset="utf-8"></script>
<script src="../book.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript" charset="utf-8">
var pagePath = "appendix/appendix-a-errata.md"
</script>
<!-- Custom JS scripts -->
<script type="text/javascript" src="../js/custom.js"></script>
<script type="text/javascript" src="../js/bigPicture.js"></script>
</body>
</html>