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<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</
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<li><em>凹语言(专为 WebAssembly 设计): <a href="https://github.com/wa-lang/wa">https://github.com/wa-lang/wa</a></em></li>
<li><em>KCL 配置语言(Rust): <a href="https://github.com/kcl-lang/kcl">https://github.com/kcl-lang/kcl</a></em></li>
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<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>
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