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<title>示例: 併發的Echo服務 | Go语言圣经</title>
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<div class="book" data-level="8.3" data-chapter-title="示例: 併發的Echo服務" data-filepath="ch8/ch8-03.md" data-basepath=".." data-revision="Thu Dec 31 2015 16:18:40 GMT+0800 (中国标准时间)">
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前言
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<b>0.1.</b>
Go語言起源
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<b>0.2.</b>
Go語言項目
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<b>0.3.</b>
本書的組織
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<b>0.4.</b>
更多的信息
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<b>0.5.</b>
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致謝
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<li class="chapter " data-level="1" data-path="ch1/ch1.html">
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<b>1.</b>
入門
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<b>1.1.</b>
Hello, World
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<b>1.2.</b>
命令行參數
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<b>1.3.</b>
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査找重複的行
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<b>1.4.</b>
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GIF動畵
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</a>
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<li class="chapter " data-level="1.5" data-path="ch1/ch1-05.html">
<a href="../ch1/ch1-05.html">
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<b>1.5.</b>
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獲取URL
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</a>
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<li class="chapter " data-level="1.6" data-path="ch1/ch1-06.html">
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<b>1.6.</b>
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併發獲取多個URL
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<b>1.7.</b>
Web服務
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<b>1.8.</b>
本章要點
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<b>2.</b>
程序結構
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<b>2.1.</b>
命名
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<b>2.2.</b>
聲明
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<b>2.3.</b>
變量
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<b>2.4.</b>
賦值
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<b>2.5.</b>
類型
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<b>2.6.</b>
包和文件
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<b>2.7.</b>
作用域
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<b>3.</b>
基礎數據類型
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<b>3.1.</b>
整型
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<li class="chapter " data-level="3.2" data-path="ch3/ch3-02.html">
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<b>3.2.</b>
浮點數
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<a href="../ch3/ch3-03.html">
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<b>3.3.</b>
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複數
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<li class="chapter " data-level="3.4" data-path="ch3/ch3-04.html">
<a href="../ch3/ch3-04.html">
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<b>3.4.</b>
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布爾型
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</a>
</li>
<li class="chapter " data-level="3.5" data-path="ch3/ch3-05.html">
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<b>3.5.</b>
字符串
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<li class="chapter " data-level="3.6" data-path="ch3/ch3-06.html">
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<b>3.6.</b>
常量
</a>
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</ul>
</li>
<li class="chapter " data-level="4" data-path="ch4/ch4.html">
<a href="../ch4/ch4.html">
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<b>4.</b>
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複合數據類型
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</a>
<ul class="articles">
<li class="chapter " data-level="4.1" data-path="ch4/ch4-01.html">
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<b>4.1.</b>
數組
</a>
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<li class="chapter " data-level="4.2" data-path="ch4/ch4-02.html">
<a href="../ch4/ch4-02.html">
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<b>4.2.</b>
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Slice
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</a>
</li>
<li class="chapter " data-level="4.3" data-path="ch4/ch4-03.html">
<a href="../ch4/ch4-03.html">
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<b>4.3.</b>
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Map
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</a>
</li>
<li class="chapter " data-level="4.4" data-path="ch4/ch4-04.html">
<a href="../ch4/ch4-04.html">
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<b>4.4.</b>
結構體
</a>
</li>
<li class="chapter " data-level="4.5" data-path="ch4/ch4-05.html">
<a href="../ch4/ch4-05.html">
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<b>4.5.</b>
JSON
</a>
</li>
<li class="chapter " data-level="4.6" data-path="ch4/ch4-06.html">
<a href="../ch4/ch4-06.html">
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<b>4.6.</b>
文本和HTML模闆
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="5" data-path="ch5/ch5.html">
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<b>5.</b>
函數
</a>
<ul class="articles">
<li class="chapter " data-level="5.1" data-path="ch5/ch5-01.html">
<a href="../ch5/ch5-01.html">
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<b>5.1.</b>
函數聲明
</a>
</li>
<li class="chapter " data-level="5.2" data-path="ch5/ch5-02.html">
<a href="../ch5/ch5-02.html">
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<b>5.2.</b>
遞歸
</a>
</li>
<li class="chapter " data-level="5.3" data-path="ch5/ch5-03.html">
<a href="../ch5/ch5-03.html">
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<b>5.3.</b>
多返迴值
</a>
</li>
<li class="chapter " data-level="5.4" data-path="ch5/ch5-04.html">
<a href="../ch5/ch5-04.html">
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<b>5.4.</b>
錯誤
</a>
</li>
<li class="chapter " data-level="5.5" data-path="ch5/ch5-05.html">
<a href="../ch5/ch5-05.html">
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<b>5.5.</b>
函數值
</a>
</li>
<li class="chapter " data-level="5.6" data-path="ch5/ch5-06.html">
<a href="../ch5/ch5-06.html">
<i class="fa fa-check"></i>
<b>5.6.</b>
匿名函數
</a>
</li>
<li class="chapter " data-level="5.7" data-path="ch5/ch5-07.html">
<a href="../ch5/ch5-07.html">
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<b>5.7.</b>
可變參數
</a>
</li>
<li class="chapter " data-level="5.8" data-path="ch5/ch5-08.html">
<a href="../ch5/ch5-08.html">
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<b>5.8.</b>
Deferred函數
</a>
</li>
<li class="chapter " data-level="5.9" data-path="ch5/ch5-09.html">
<a href="../ch5/ch5-09.html">
<i class="fa fa-check"></i>
<b>5.9.</b>
Panic異常
</a>
</li>
<li class="chapter " data-level="5.10" data-path="ch5/ch5-10.html">
<a href="../ch5/ch5-10.html">
<i class="fa fa-check"></i>
<b>5.10.</b>
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Recover捕獲異常
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</a>
</li>
</ul>
</li>
<li class="chapter " data-level="6" data-path="ch6/ch6.html">
<a href="../ch6/ch6.html">
<i class="fa fa-check"></i>
<b>6.</b>
方法
</a>
<ul class="articles">
<li class="chapter " data-level="6.1" data-path="ch6/ch6-01.html">
<a href="../ch6/ch6-01.html">
<i class="fa fa-check"></i>
<b>6.1.</b>
方法聲明
</a>
</li>
<li class="chapter " data-level="6.2" data-path="ch6/ch6-02.html">
<a href="../ch6/ch6-02.html">
<i class="fa fa-check"></i>
<b>6.2.</b>
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基於指針對象的方法
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</a>
</li>
<li class="chapter " data-level="6.3" data-path="ch6/ch6-03.html">
<a href="../ch6/ch6-03.html">
<i class="fa fa-check"></i>
<b>6.3.</b>
通過嵌入結構體來擴展類型
</a>
</li>
<li class="chapter " data-level="6.4" data-path="ch6/ch6-04.html">
<a href="../ch6/ch6-04.html">
<i class="fa fa-check"></i>
<b>6.4.</b>
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方法值和方法表達式
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</a>
</li>
<li class="chapter " data-level="6.5" data-path="ch6/ch6-05.html">
<a href="../ch6/ch6-05.html">
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<b>6.5.</b>
示例: Bit數組
</a>
</li>
<li class="chapter " data-level="6.6" data-path="ch6/ch6-06.html">
<a href="../ch6/ch6-06.html">
<i class="fa fa-check"></i>
<b>6.6.</b>
封裝
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="7" data-path="ch7/ch7.html">
<a href="../ch7/ch7.html">
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<b>7.</b>
接口
</a>
<ul class="articles">
<li class="chapter " data-level="7.1" data-path="ch7/ch7-01.html">
<a href="../ch7/ch7-01.html">
<i class="fa fa-check"></i>
<b>7.1.</b>
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接口是合約
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</a>
</li>
<li class="chapter " data-level="7.2" data-path="ch7/ch7-02.html">
<a href="../ch7/ch7-02.html">
<i class="fa fa-check"></i>
<b>7.2.</b>
接口類型
</a>
</li>
<li class="chapter " data-level="7.3" data-path="ch7/ch7-03.html">
<a href="../ch7/ch7-03.html">
<i class="fa fa-check"></i>
<b>7.3.</b>
實現接口的條件
</a>
</li>
<li class="chapter " data-level="7.4" data-path="ch7/ch7-04.html">
<a href="../ch7/ch7-04.html">
<i class="fa fa-check"></i>
<b>7.4.</b>
flag.Value接口
</a>
</li>
<li class="chapter " data-level="7.5" data-path="ch7/ch7-05.html">
<a href="../ch7/ch7-05.html">
<i class="fa fa-check"></i>
<b>7.5.</b>
接口值
</a>
</li>
<li class="chapter " data-level="7.6" data-path="ch7/ch7-06.html">
<a href="../ch7/ch7-06.html">
<i class="fa fa-check"></i>
<b>7.6.</b>
sort.Interface接口
</a>
</li>
<li class="chapter " data-level="7.7" data-path="ch7/ch7-07.html">
<a href="../ch7/ch7-07.html">
<i class="fa fa-check"></i>
<b>7.7.</b>
http.Handler接口
</a>
</li>
<li class="chapter " data-level="7.8" data-path="ch7/ch7-08.html">
<a href="../ch7/ch7-08.html">
<i class="fa fa-check"></i>
<b>7.8.</b>
error接口
</a>
</li>
<li class="chapter " data-level="7.9" data-path="ch7/ch7-09.html">
<a href="../ch7/ch7-09.html">
<i class="fa fa-check"></i>
<b>7.9.</b>
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示例: 表達式求值
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</a>
</li>
<li class="chapter " data-level="7.10" data-path="ch7/ch7-10.html">
<a href="../ch7/ch7-10.html">
<i class="fa fa-check"></i>
<b>7.10.</b>
類型斷言
</a>
</li>
<li class="chapter " data-level="7.11" data-path="ch7/ch7-11.html">
<a href="../ch7/ch7-11.html">
<i class="fa fa-check"></i>
<b>7.11.</b>
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基於類型斷言識别錯誤類型
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</a>
</li>
<li class="chapter " data-level="7.12" data-path="ch7/ch7-12.html">
<a href="../ch7/ch7-12.html">
<i class="fa fa-check"></i>
<b>7.12.</b>
通過類型斷言査詢接口
</a>
</li>
<li class="chapter " data-level="7.13" data-path="ch7/ch7-13.html">
<a href="../ch7/ch7-13.html">
<i class="fa fa-check"></i>
<b>7.13.</b>
類型分支
</a>
</li>
<li class="chapter " data-level="7.14" data-path="ch7/ch7-14.html">
<a href="../ch7/ch7-14.html">
<i class="fa fa-check"></i>
<b>7.14.</b>
示例: 基於標記的XML解碼
</a>
</li>
<li class="chapter " data-level="7.15" data-path="ch7/ch7-15.html">
<a href="../ch7/ch7-15.html">
<i class="fa fa-check"></i>
<b>7.15.</b>
補充幾點
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="8" data-path="ch8/ch8.html">
<a href="../ch8/ch8.html">
<i class="fa fa-check"></i>
<b>8.</b>
Goroutines和Channels
</a>
<ul class="articles">
<li class="chapter " data-level="8.1" data-path="ch8/ch8-01.html">
<a href="../ch8/ch8-01.html">
<i class="fa fa-check"></i>
<b>8.1.</b>
Goroutines
</a>
</li>
<li class="chapter " data-level="8.2" data-path="ch8/ch8-02.html">
<a href="../ch8/ch8-02.html">
<i class="fa fa-check"></i>
<b>8.2.</b>
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示例: 併發的Clock服務
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</a>
</li>
<li class="chapter active" data-level="8.3" data-path="ch8/ch8-03.html">
<a href="../ch8/ch8-03.html">
<i class="fa fa-check"></i>
<b>8.3.</b>
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示例: 併發的Echo服務
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</a>
</li>
<li class="chapter " data-level="8.4" data-path="ch8/ch8-04.html">
<a href="../ch8/ch8-04.html">
<i class="fa fa-check"></i>
<b>8.4.</b>
Channels
</a>
</li>
<li class="chapter " data-level="8.5" data-path="ch8/ch8-05.html">
<a href="../ch8/ch8-05.html">
<i class="fa fa-check"></i>
<b>8.5.</b>
併行的循環
</a>
</li>
<li class="chapter " data-level="8.6" data-path="ch8/ch8-06.html">
<a href="../ch8/ch8-06.html">
<i class="fa fa-check"></i>
<b>8.6.</b>
2015-12-21 04:55:18 +00:00
示例: 併發的Web爬蟲
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="8.7" data-path="ch8/ch8-07.html">
<a href="../ch8/ch8-07.html">
<i class="fa fa-check"></i>
<b>8.7.</b>
2015-12-21 04:55:18 +00:00
基於select的多路複用
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="8.8" data-path="ch8/ch8-08.html">
<a href="../ch8/ch8-08.html">
<i class="fa fa-check"></i>
<b>8.8.</b>
2015-12-21 04:55:18 +00:00
示例: 併發的字典遍歷
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="8.9" data-path="ch8/ch8-09.html">
<a href="../ch8/ch8-09.html">
<i class="fa fa-check"></i>
<b>8.9.</b>
2015-12-28 08:08:26 +00:00
併發的退出
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="8.10" data-path="ch8/ch8-10.html">
<a href="../ch8/ch8-10.html">
<i class="fa fa-check"></i>
<b>8.10.</b>
示例: 聊天服務
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="9" data-path="ch9/ch9.html">
<a href="../ch9/ch9.html">
<i class="fa fa-check"></i>
<b>9.</b>
2015-12-21 04:55:18 +00:00
基於共享變量的併發
2015-12-09 07:57:17 +00:00
</a>
<ul class="articles">
<li class="chapter " data-level="9.1" data-path="ch9/ch9-01.html">
<a href="../ch9/ch9-01.html">
<i class="fa fa-check"></i>
<b>9.1.</b>
競爭條件
</a>
</li>
<li class="chapter " data-level="9.2" data-path="ch9/ch9-02.html">
<a href="../ch9/ch9-02.html">
<i class="fa fa-check"></i>
<b>9.2.</b>
sync.Mutex互斥鎖
</a>
</li>
<li class="chapter " data-level="9.3" data-path="ch9/ch9-03.html">
<a href="../ch9/ch9-03.html">
<i class="fa fa-check"></i>
<b>9.3.</b>
sync.RWMutex讀寫鎖
</a>
</li>
<li class="chapter " data-level="9.4" data-path="ch9/ch9-04.html">
<a href="../ch9/ch9-04.html">
<i class="fa fa-check"></i>
<b>9.4.</b>
2015-12-21 04:55:18 +00:00
內存同步
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="9.5" data-path="ch9/ch9-05.html">
<a href="../ch9/ch9-05.html">
<i class="fa fa-check"></i>
<b>9.5.</b>
sync.Once初始化
</a>
</li>
<li class="chapter " data-level="9.6" data-path="ch9/ch9-06.html">
<a href="../ch9/ch9-06.html">
<i class="fa fa-check"></i>
<b>9.6.</b>
競爭條件檢測
</a>
</li>
<li class="chapter " data-level="9.7" data-path="ch9/ch9-07.html">
<a href="../ch9/ch9-07.html">
<i class="fa fa-check"></i>
<b>9.7.</b>
2015-12-21 04:55:18 +00:00
示例: 併發的非阻塞緩存
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="9.8" data-path="ch9/ch9-08.html">
<a href="../ch9/ch9-08.html">
<i class="fa fa-check"></i>
<b>9.8.</b>
2015-12-21 04:55:18 +00:00
Goroutines和線程
2015-12-09 07:57:17 +00:00
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="10" data-path="ch10/ch10.html">
<a href="../ch10/ch10.html">
<i class="fa fa-check"></i>
<b>10.</b>
包和工具
</a>
<ul class="articles">
<li class="chapter " data-level="10.1" data-path="ch10/ch10-01.html">
<a href="../ch10/ch10-01.html">
<i class="fa fa-check"></i>
<b>10.1.</b>
簡介
</a>
</li>
<li class="chapter " data-level="10.2" data-path="ch10/ch10-02.html">
<a href="../ch10/ch10-02.html">
<i class="fa fa-check"></i>
<b>10.2.</b>
導入路徑
</a>
</li>
<li class="chapter " data-level="10.3" data-path="ch10/ch10-03.html">
<a href="../ch10/ch10-03.html">
<i class="fa fa-check"></i>
<b>10.3.</b>
包聲明
</a>
</li>
<li class="chapter " data-level="10.4" data-path="ch10/ch10-04.html">
<a href="../ch10/ch10-04.html">
<i class="fa fa-check"></i>
<b>10.4.</b>
導入聲明
</a>
</li>
<li class="chapter " data-level="10.5" data-path="ch10/ch10-05.html">
<a href="../ch10/ch10-05.html">
<i class="fa fa-check"></i>
<b>10.5.</b>
匿名導入
</a>
</li>
<li class="chapter " data-level="10.6" data-path="ch10/ch10-06.html">
<a href="../ch10/ch10-06.html">
<i class="fa fa-check"></i>
<b>10.6.</b>
包和命名
</a>
</li>
<li class="chapter " data-level="10.7" data-path="ch10/ch10-07.html">
<a href="../ch10/ch10-07.html">
<i class="fa fa-check"></i>
<b>10.7.</b>
工具
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="11" data-path="ch11/ch11.html">
<a href="../ch11/ch11.html">
<i class="fa fa-check"></i>
<b>11.</b>
測試
</a>
<ul class="articles">
<li class="chapter " data-level="11.1" data-path="ch11/ch11-01.html">
<a href="../ch11/ch11-01.html">
<i class="fa fa-check"></i>
<b>11.1.</b>
go test
</a>
</li>
<li class="chapter " data-level="11.2" data-path="ch11/ch11-02.html">
<a href="../ch11/ch11-02.html">
<i class="fa fa-check"></i>
<b>11.2.</b>
測試函數
</a>
</li>
<li class="chapter " data-level="11.3" data-path="ch11/ch11-03.html">
<a href="../ch11/ch11-03.html">
<i class="fa fa-check"></i>
<b>11.3.</b>
測試覆蓋率
</a>
</li>
<li class="chapter " data-level="11.4" data-path="ch11/ch11-04.html">
<a href="../ch11/ch11-04.html">
<i class="fa fa-check"></i>
<b>11.4.</b>
基準測試
</a>
</li>
<li class="chapter " data-level="11.5" data-path="ch11/ch11-05.html">
<a href="../ch11/ch11-05.html">
<i class="fa fa-check"></i>
<b>11.5.</b>
剖析
</a>
</li>
<li class="chapter " data-level="11.6" data-path="ch11/ch11-06.html">
<a href="../ch11/ch11-06.html">
<i class="fa fa-check"></i>
<b>11.6.</b>
示例函數
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="12" data-path="ch12/ch12.html">
<a href="../ch12/ch12.html">
<i class="fa fa-check"></i>
<b>12.</b>
反射
</a>
<ul class="articles">
<li class="chapter " data-level="12.1" data-path="ch12/ch12-01.html">
<a href="../ch12/ch12-01.html">
<i class="fa fa-check"></i>
<b>12.1.</b>
2015-12-21 04:55:18 +00:00
爲何需要反射?
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="12.2" data-path="ch12/ch12-02.html">
<a href="../ch12/ch12-02.html">
<i class="fa fa-check"></i>
<b>12.2.</b>
reflect.Type和reflect.Value
</a>
</li>
<li class="chapter " data-level="12.3" data-path="ch12/ch12-03.html">
<a href="../ch12/ch12-03.html">
<i class="fa fa-check"></i>
<b>12.3.</b>
Display遞歸打印
</a>
</li>
<li class="chapter " data-level="12.4" data-path="ch12/ch12-04.html">
<a href="../ch12/ch12-04.html">
<i class="fa fa-check"></i>
<b>12.4.</b>
2015-12-21 04:55:18 +00:00
示例: 編碼S表達式
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="12.5" data-path="ch12/ch12-05.html">
<a href="../ch12/ch12-05.html">
<i class="fa fa-check"></i>
<b>12.5.</b>
通過reflect.Value脩改值
</a>
</li>
<li class="chapter " data-level="12.6" data-path="ch12/ch12-06.html">
<a href="../ch12/ch12-06.html">
<i class="fa fa-check"></i>
<b>12.6.</b>
2015-12-21 04:55:18 +00:00
示例: 解碼S表達式
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="12.7" data-path="ch12/ch12-07.html">
<a href="../ch12/ch12-07.html">
<i class="fa fa-check"></i>
<b>12.7.</b>
2015-12-28 08:08:26 +00:00
獲取結構體字段標識
2015-12-09 07:57:17 +00:00
</a>
</li>
<li class="chapter " data-level="12.8" data-path="ch12/ch12-08.html">
<a href="../ch12/ch12-08.html">
<i class="fa fa-check"></i>
<b>12.8.</b>
顯示一個類型的方法集
</a>
</li>
<li class="chapter " data-level="12.9" data-path="ch12/ch12-09.html">
<a href="../ch12/ch12-09.html">
<i class="fa fa-check"></i>
<b>12.9.</b>
幾點忠告
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="13" data-path="ch13/ch13.html">
<a href="../ch13/ch13.html">
<i class="fa fa-check"></i>
<b>13.</b>
底層編程
</a>
<ul class="articles">
<li class="chapter " data-level="13.1" data-path="ch13/ch13-01.html">
<a href="../ch13/ch13-01.html">
<i class="fa fa-check"></i>
<b>13.1.</b>
unsafe.Sizeof, Alignof 和 Offsetof
</a>
</li>
<li class="chapter " data-level="13.2" data-path="ch13/ch13-02.html">
<a href="../ch13/ch13-02.html">
<i class="fa fa-check"></i>
<b>13.2.</b>
unsafe.Pointer
</a>
</li>
<li class="chapter " data-level="13.3" data-path="ch13/ch13-03.html">
<a href="../ch13/ch13-03.html">
<i class="fa fa-check"></i>
<b>13.3.</b>
示例: 深度相等判斷
</a>
</li>
<li class="chapter " data-level="13.4" data-path="ch13/ch13-04.html">
<a href="../ch13/ch13-04.html">
<i class="fa fa-check"></i>
<b>13.4.</b>
通過cgo調用C代碼
</a>
</li>
<li class="chapter " data-level="13.5" data-path="ch13/ch13-05.html">
<a href="../ch13/ch13-05.html">
<i class="fa fa-check"></i>
<b>13.5.</b>
幾點忠告
</a>
</li>
</ul>
</li>
2015-12-24 06:47:06 +00:00
<li class="chapter " data-level="14" data-path="CONTRIBUTORS.html">
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2015-12-24 06:47:06 +00:00
<a href="../CONTRIBUTORS.html">
2015-12-09 07:57:17 +00:00
<i class="fa fa-check"></i>
2015-12-21 04:55:18 +00:00
<b>14.</b>
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2015-12-24 06:47:06 +00:00
附録
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</a>
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<h2 id="83-&#x793A;&#x4F8B;-&#x4F75;&#x767C;&#x7684;echo&#x670D;&#x52D9;">8.3. &#x793A;&#x4F8B;: &#x4F75;&#x767C;&#x7684;Echo&#x670D;&#x52D9;</h2>
2015-12-31 08:20:27 +00:00
<p>clock&#x670D;&#x52D9;&#x5668;&#x6BCF;&#x4E00;&#x500B;&#x9023;&#x63A5;&#x90FD;&#x6703;&#x8D77;&#x4E00;&#x500B;goroutine&#x3002;&#x5728;&#x672C;&#x7BC0;&#x4E2D;&#x6211;&#x5011;&#x6703;&#x5275;&#x5EFA;&#x4E00;&#x500B;echo&#x670D;&#x52D9;&#x5668;&#xFF0C;&#x9019;&#x500B;&#x670D;&#x52D9;&#x5728;&#x6BCF;&#x500B;&#x9023;&#x63A5;&#x4E2D;&#x6703;&#x6709;&#x591A;&#x500B;goroutine&#x3002;&#x5927;&#x591A;&#x6578;echo&#x670D;&#x52D9;&#x50C5;&#x50C5;&#x6703;&#x8FD4;&#x8FF4;&#x4ED6;&#x5011;&#x8B80;&#x53D6;&#x5230;&#x7684;&#x5167;&#x5BB9;&#xFF0C;&#x5C31;&#x50CF;&#x4E0B;&#x9762;&#x9019;&#x500B;&#x7C21;&#x55AE;&#x7684;handleConn&#x51FD;&#x6578;&#x6240;&#x505A;&#x7684;&#x4E00;&#x6A23;&#xFF1A;</p>
<pre><code class="lang-go"><span class="hljs-keyword">func</span> handleConn(c net.Conn) {
io.Copy(c, c) <span class="hljs-comment">// <span class="hljs-doctag">NOTE:</span> ignoring errors</span>
c.Close()
}
</code></pre>
<p>&#x4E00;&#x500B;&#x66F4;&#x6709;&#x610F;&#x601D;&#x7684;echo&#x670D;&#x52D9;&#x61C9;&#x8A72;&#x6A21;&#x64EC;&#x4E00;&#x500B;&#x5BE6;&#x969B;&#x7684;echo&#x7684;&#x201C;&#x8FF4;&#x97FF;&#x201D;&#xFF0C;&#x4F75;&#x4E14;&#x4E00;&#x958B;&#x59CB;&#x8981;&#x7528;&#x5927;&#x5BEB;HELLO&#x4F86;&#x8868;&#x793A;&#x201C;&#x8072;&#x97F3;&#x5F88;&#x5927;&#x201D;&#xFF0C;&#x4E4B;&#x5F8C;&#x7D93;&#x904E;&#x4E00;&#x5C0F;&#x6BB5;&#x5EF6;&#x9072;&#x8FD4;&#x8FF4;&#x4E00;&#x500B;&#x6709;&#x6240;&#x7DE9;&#x548C;&#x7684;Hello&#xFF0C;&#x7136;&#x5F8C;&#x4E00;&#x500B;&#x5168;&#x5C0F;&#x5BEB;&#x5B57;&#x6BCD;&#x7684;hello&#x8868;&#x793A;&#x8072;&#x97F3;&#x6F38;&#x6F38;&#x8B8A;&#x5C0F;&#x76F4;&#x81F3;&#x6D88;&#x5931;&#xFF0C;&#x50CF;&#x4E0B;&#x9762;&#x9019;&#x500B;&#x7248;&#x672C;&#x7684;handleConn(&#x8B6F;&#x8A3B;&#xFF1A;&#x7B11;&#x770B;&#x4F5C;&#x8005;&#x8166;&#x6D1E;&#x5927;&#x958B;)&#xFF1A;</p>
<pre><code class="lang-go">gopl.io/ch8/reverb1
<span class="hljs-keyword">func</span> echo(c net.Conn, shout <span class="hljs-typename">string</span>, delay time.Duration) {
fmt.Fprintln(c, <span class="hljs-string">&quot;\t&quot;</span>, strings.ToUpper(shout))
time.Sleep(delay)
fmt.Fprintln(c, <span class="hljs-string">&quot;\t&quot;</span>, shout)
time.Sleep(delay)
fmt.Fprintln(c, <span class="hljs-string">&quot;\t&quot;</span>, strings.ToLower(shout))
}
<span class="hljs-keyword">func</span> handleConn(c net.Conn) {
input := bufio.NewScanner(c)
<span class="hljs-keyword">for</span> input.Scan() {
echo(c, input.Text(), <span class="hljs-number">1</span>*time.Second)
}
<span class="hljs-comment">// <span class="hljs-doctag">NOTE:</span> ignoring potential errors from input.Err()</span>
c.Close()
}
</code></pre>
<p>&#x6211;&#x5011;&#x9700;&#x8981;&#x965E;&#x7D1A;&#x6211;&#x5011;&#x7684;&#x5BA2;&#x6236;&#x7AEF;&#x7A0B;&#x5E8F;&#xFF0C;&#x9019;&#x6A23;&#x5B83;&#x5C31;&#x53EF;&#x4EE5;&#x767C;&#x9001;&#x7D42;&#x7AEF;&#x7684;&#x8F38;&#x5165;&#x5230;&#x670D;&#x52D9;&#x5668;&#xFF0C;&#x4F75;&#x628A;&#x670D;&#x52D9;&#x7AEF;&#x7684;&#x8FD4;&#x8FF4;&#x8F38;&#x51FA;&#x5230;&#x7D42;&#x7AEF;&#x4E0A;&#xFF0C;&#x9019;&#x4F7F;&#x6211;&#x5011;&#x6709;&#x4E86;&#x4F7F;&#x7528;&#x4F75;&#x767C;&#x7684;&#x53E6;&#x4E00;&#x500B;&#x597D;&#x6A5F;&#x6703;&#xFF1A;</p>
<pre><code class="lang-go">gopl.io/ch8/netcat2
<span class="hljs-keyword">func</span> main() {
conn, err := net.Dial(<span class="hljs-string">&quot;tcp&quot;</span>, <span class="hljs-string">&quot;localhost:8000&quot;</span>)
<span class="hljs-keyword">if</span> err != <span class="hljs-constant">nil</span> {
log.Fatal(err)
}
<span class="hljs-keyword">defer</span> conn.Close()
<span class="hljs-keyword">go</span> mustCopy(os.Stdout, conn)
mustCopy(conn, os.Stdin)
}
</code></pre>
<p>&#x7576;main goroutine&#x5F9E;&#x6A19;&#x6E96;&#x8F38;&#x5165;&#x6D41;&#x4E2D;&#x8B80;&#x53D6;&#x5167;&#x5BB9;&#x4F75;&#x5C07;&#x5176;&#x767C;&#x9001;&#x7D66;&#x670D;&#x52D9;&#x5668;&#x6642;&#xFF0C;&#x53E6;&#x4E00;&#x500B;goroutine&#x6703;&#x8B80;&#x53D6;&#x4F75;&#x6253;&#x5370;&#x670D;&#x52D9;&#x7AEF;&#x7684;&#x97FF;&#x61C9;&#x3002;&#x7576;main goroutine&#x78B0;&#x5230;&#x8F38;&#x5165;&#x7D42;&#x6B62;&#x6642;&#xFF0C;&#x4F8B;&#x5982;&#xFF0C;&#x7528;&#x6236;&#x5728;&#x7D42;&#x7AEF;&#x4E2D;&#x6309;&#x4E86;Control-D(^D)&#xFF0C;&#x5728;windows&#x4E0A;&#x662F;Control-Z&#xFF0C;&#x9019;&#x6642;&#x7A0B;&#x5E8F;&#x5C31;&#x6703;&#x88AB;&#x7D42;&#x6B62;&#xFF0C;&#x76E1;&#x7BA1;&#x5176;&#x5B83;goroutine&#x4E2D;&#x9084;&#x6709;&#x9032;&#x884C;&#x4E2D;&#x7684;&#x4EFB;&#x52D9;&#x3002;(&#x5728;8.4.1&#x4E2D;&#x5F15;&#x5165;&#x4E86;channels&#x5F8C;&#x6211;&#x5011;&#x6703;&#x660E;&#x767D;&#x5982;&#x4F55;&#x8B93;&#x7A0B;&#x5E8F;&#x7B49;&#x5F85;&#x5169;&#x908A;&#x90FD;&#x7D50;&#x675F;)&#x3002;</p>
<p>&#x4E0B;&#x9762;&#x9019;&#x500B;&#x6703;&#x8A71;&#x4E2D;&#xFF0C;&#x5BA2;&#x6236;&#x7AEF;&#x7684;&#x8F38;&#x5165;&#x662F;&#x5DE6;&#x5C0D;&#x9F4A;&#x7684;&#xFF0C;&#x670D;&#x52D9;&#x7AEF;&#x7684;&#x97FF;&#x61C9;&#x6703;&#x7528;&#x7E2E;&#x9032;&#x4F86;&#x5340;&#x522B;&#x986F;&#x793A;&#x3002;
&#x5BA2;&#x6236;&#x7AEF;&#x6703;&#x5411;&#x670D;&#x52D9;&#x5668;&#x201C;&#x558A;&#x4E09;&#x6B21;&#x8A71;&#x201D;&#xFF1A;</p>
<pre><code>$ go build gopl.io/ch8/reverb1
$ ./reverb1 &amp;
$ go build gopl.io/ch8/netcat2
$ ./netcat2
Hello?
HELLO?
Hello?
hello?
Is there anybody there?
IS THERE ANYBODY THERE?
Yooo-hooo!
Is there anybody there?
is there anybody there?
YOOO-HOOO!
Yooo-hooo!
yooo-hooo!
^D
$ killall reverb1
</code></pre><p>&#x8A3B;&#x610F;&#x5BA2;&#x6236;&#x7AEF;&#x7684;&#x7B2C;&#x4E09;&#x6B21;shout&#x5728;&#x524D;&#x4E00;&#x500B;shout&#x8655;&#x7406;&#x5B8C;&#x6210;&#x4E4B;&#x524D;&#x4E00;&#x76F4;&#x6C92;&#x6709;&#x88AB;&#x8655;&#x7406;&#xFF0C;&#x9019;&#x8C8C;&#x4F3C;&#x770B;&#x8D77;&#x4F86;&#x4E0D;&#x662F;&#x7279;&#x522B;&#x201C;&#x73FE;&#x5BE6;&#x201D;&#x3002;&#x771E;&#x5BE6;&#x4E16;&#x754C;&#x91CC;&#x7684;&#x8FF4;&#x97FF;&#x61C9;&#x8A72;&#x662F;&#x6703;&#x7531;&#x4E09;&#x6B21;shout&#x7684;&#x8FF4;&#x8072;&#x7D44;&#x5408;&#x800C;&#x6210;&#x7684;&#x3002;&#x7232;&#x4E86;&#x6A21;&#x64EC;&#x771E;&#x5BE6;&#x4E16;&#x754C;&#x7684;&#x8FF4;&#x97FF;&#xFF0C;&#x6211;&#x5011;&#x9700;&#x8981;&#x66F4;&#x591A;&#x7684;goroutine&#x4F86;&#x505A;&#x9019;&#x4EF6;&#x4E8B;&#x60C5;&#x3002;&#x9019;&#x6A23;&#x6211;&#x5011;&#x5C31;&#x518D;&#x4E00;&#x6B21;&#x5730;&#x9700;&#x8981;go&#x9019;&#x500B;&#x95DC;&#x9375;&#x8A5E;&#x4E86;&#xFF0C;&#x9019;&#x6B21;&#x6211;&#x5011;&#x7528;&#x5B83;&#x4F86;&#x8ABF;&#x7528;echo&#xFF1A;</p>
<pre><code class="lang-go">gopl.io/ch8/reverb2
<span class="hljs-keyword">func</span> handleConn(c net.Conn) {
input := bufio.NewScanner(c)
<span class="hljs-keyword">for</span> input.Scan() {
<span class="hljs-keyword">go</span> echo(c, input.Text(), <span class="hljs-number">1</span>*time.Second)
}
<span class="hljs-comment">// <span class="hljs-doctag">NOTE:</span> ignoring potential errors from input.Err()</span>
c.Close()
}
</code></pre>
<p>go&#x5F8C;&#x8DDF;&#x7684;&#x51FD;&#x6578;&#x7684;&#x53C3;&#x6578;&#x6703;&#x5728;go&#x8A9E;&#x53E5;&#x81EA;&#x8EAB;&#x57F7;&#x884C;&#x6642;&#x88AB;&#x6C42;&#x503C;&#xFF1B;&#x56E0;&#x6B64;input.Text()&#x6703;&#x5728;main goroutine&#x4E2D;&#x88AB;&#x6C42;&#x503C;&#x3002;
&#x73FE;&#x5728;&#x8FF4;&#x97FF;&#x662F;&#x4F75;&#x767C;&#x4F75;&#x4E14;&#x6703;&#x6309;&#x6642;&#x9593;&#x4F86;&#x8986;&#x84CB;&#x6389;&#x5176;&#x5B83;&#x97FF;&#x61C9;&#x4E86;&#xFF1A;</p>
<pre><code>$ go build gopl.io/ch8/reverb2
$ ./reverb2 &amp;
$ ./netcat2
Is there anybody there?
IS THERE ANYBODY THERE?
Yooo-hooo!
Is there anybody there?
YOOO-HOOO!
is there anybody there?
Yooo-hooo!
yooo-hooo!
^D
$ killall reverb2
</code></pre><p>&#x8B93;&#x670D;&#x52D9;&#x4F7F;&#x7528;&#x4F75;&#x767C;&#x4E0D;&#x96BB;&#x662F;&#x8655;&#x7406;&#x591A;&#x500B;&#x5BA2;&#x6236;&#x7AEF;&#x7684;&#x8ACB;&#x6C42;&#xFF0C;&#x751A;&#x81F3;&#x5728;&#x8655;&#x7406;&#x55AE;&#x500B;&#x9023;&#x63A5;&#x6642;&#x4E5F;&#x53EF;&#x80FD;&#x6703;&#x7528;&#x5230;&#xFF0C;&#x5C31;&#x50CF;&#x6211;&#x5011;&#x4E0A;&#x9762;&#x7684;&#x5169;&#x500B;go&#x95DC;&#x9375;&#x8A5E;&#x7684;&#x7528;&#x6CD5;&#x3002;&#x7136;&#x800C;&#x5728;&#x6211;&#x5011;&#x4F7F;&#x7528;go&#x95DC;&#x9375;&#x8A5E;&#x7684;&#x540C;&#x6642;&#xFF0C;&#x9700;&#x8981;&#x614E;&#x91CD;&#x5730;&#x8003;&#x616E;net.Conn&#x4E2D;&#x7684;&#x65B9;&#x6CD5;&#x5728;&#x4F75;&#x767C;&#x5730;&#x8ABF;&#x7528;&#x6642;&#x662F;&#x5426;&#x5B89;&#x5168;&#xFF0C;&#x4E8B;&#x5BE6;&#x4E0A;&#x5C0D;&#x65BC;&#x5927;&#x591A;&#x6578;&#x985E;&#x578B;&#x4F86;&#x8AAC;&#x4E5F;&#x78BA;&#x5BE6;&#x4E0D;&#x5B89;&#x5168;&#x3002;&#x6211;&#x5011;&#x6703;&#x5728;&#x4E0B;&#x4E00;&#x7AE0;&#x4E2D;&#x8A73;&#x7D30;&#x5730;&#x63A2;&#x8A0E;&#x4F75;&#x767C;&#x5B89;&#x5168;&#x6027;&#x3002;</p>
2015-12-09 07:57:17 +00:00
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