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<div class="book" data-level="6.6" data-chapter-title="封裝" data-filepath="ch6/ch6-06.md" data-basepath=".." data-revision="Wed Dec 09 2015 15:54:13 GMT+0800 (中国标准时间)">
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<li class="chapter " data-level="0" data-path="index.html">
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前言
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<ul class="articles">
<li class="chapter " data-level="0.1" data-path="ch0/ch0-01.html">
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<b>0.1.</b>
Go語言起源
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<li class="chapter " data-level="0.2" data-path="ch0/ch0-02.html">
<a href="../ch0/ch0-02.html">
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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>
緻謝
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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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<ul class="articles">
<li class="chapter " data-level="1.1" data-path="ch1/ch1-01.html">
<a href="../ch1/ch1-01.html">
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<b>1.1.</b>
Hello, World
</a>
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<li class="chapter " data-level="1.2" data-path="ch1/ch1-02.html">
<a href="../ch1/ch1-02.html">
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<b>1.2.</b>
命令行參數
</a>
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<li class="chapter " data-level="1.3" data-path="ch1/ch1-03.html">
<a href="../ch1/ch1-03.html">
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<b>1.3.</b>
査找重復的行
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<li class="chapter " data-level="1.4" data-path="ch1/ch1-04.html">
<a href="../ch1/ch1-04.html">
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<b>1.4.</b>
GIF動畫
</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>
穫取URL
</a>
</li>
<li class="chapter " data-level="1.6" data-path="ch1/ch1-06.html">
<a href="../ch1/ch1-06.html">
<i class="fa fa-check"></i>
<b>1.6.</b>
併髮穫取多個URL
</a>
</li>
<li class="chapter " data-level="1.7" data-path="ch1/ch1-07.html">
<a href="../ch1/ch1-07.html">
<i class="fa fa-check"></i>
<b>1.7.</b>
Web服務
</a>
</li>
<li class="chapter " data-level="1.8" data-path="ch1/ch1-08.html">
<a href="../ch1/ch1-08.html">
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<b>1.8.</b>
本章要點
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2" data-path="ch2/ch2.html">
<a href="../ch2/ch2.html">
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<b>2.</b>
程序結構
</a>
<ul class="articles">
<li class="chapter " data-level="2.1" data-path="ch2/ch2-01.html">
<a href="../ch2/ch2-01.html">
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<b>2.1.</b>
命名
</a>
</li>
<li class="chapter " data-level="2.2" data-path="ch2/ch2-02.html">
<a href="../ch2/ch2-02.html">
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<b>2.2.</b>
聲明
</a>
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<li class="chapter " data-level="2.3" data-path="ch2/ch2-03.html">
<a href="../ch2/ch2-03.html">
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<b>2.3.</b>
變量
</a>
</li>
<li class="chapter " data-level="2.4" data-path="ch2/ch2-04.html">
<a href="../ch2/ch2-04.html">
<i class="fa fa-check"></i>
<b>2.4.</b>
賦值
</a>
</li>
<li class="chapter " data-level="2.5" data-path="ch2/ch2-05.html">
<a href="../ch2/ch2-05.html">
<i class="fa fa-check"></i>
<b>2.5.</b>
類型
</a>
</li>
<li class="chapter " data-level="2.6" data-path="ch2/ch2-06.html">
<a href="../ch2/ch2-06.html">
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<b>2.6.</b>
包和文件
</a>
</li>
<li class="chapter " data-level="2.7" data-path="ch2/ch2-07.html">
<a href="../ch2/ch2-07.html">
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<b>2.7.</b>
作用域
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="3" data-path="ch3/ch3.html">
<a href="../ch3/ch3.html">
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<b>3.</b>
基礎數據類型
</a>
<ul class="articles">
<li class="chapter " data-level="3.1" data-path="ch3/ch3-01.html">
<a href="../ch3/ch3-01.html">
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<b>3.1.</b>
整型
</a>
</li>
<li class="chapter " data-level="3.2" data-path="ch3/ch3-02.html">
<a href="../ch3/ch3-02.html">
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<b>3.2.</b>
浮點數
</a>
</li>
<li class="chapter " data-level="3.3" data-path="ch3/ch3-03.html">
<a href="../ch3/ch3-03.html">
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<b>3.3.</b>
復數
</a>
</li>
<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>
佈爾型
</a>
</li>
<li class="chapter " data-level="3.5" data-path="ch3/ch3-05.html">
<a href="../ch3/ch3-05.html">
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<b>3.5.</b>
字符串
</a>
</li>
<li class="chapter " data-level="3.6" data-path="ch3/ch3-06.html">
<a href="../ch3/ch3-06.html">
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<b>3.6.</b>
常量
</a>
</li>
</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>
復閤數據類型
</a>
<ul class="articles">
<li class="chapter " data-level="4.1" data-path="ch4/ch4-01.html">
<a href="../ch4/ch4-01.html">
<i class="fa fa-check"></i>
<b>4.1.</b>
數組
</a>
</li>
<li class="chapter " data-level="4.2" data-path="ch4/ch4-02.html">
<a href="../ch4/ch4-02.html">
<i class="fa fa-check"></i>
<b>4.2.</b>
切片
</a>
</li>
<li class="chapter " data-level="4.3" data-path="ch4/ch4-03.html">
<a href="../ch4/ch4-03.html">
<i class="fa fa-check"></i>
<b>4.3.</b>
字典
</a>
</li>
<li class="chapter " data-level="4.4" data-path="ch4/ch4-04.html">
<a href="../ch4/ch4-04.html">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<a href="../ch5/ch5.html">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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">
<i class="fa fa-check"></i>
<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>
Recover捕穫異常
</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>
基於指鍼對象的方法
</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>
方法值和方法錶達式
</a>
</li>
<li class="chapter " data-level="6.5" data-path="ch6/ch6-05.html">
<a href="../ch6/ch6-05.html">
<i class="fa fa-check"></i>
<b>6.5.</b>
示例: Bit數組
</a>
</li>
<li class="chapter active" 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">
<i class="fa fa-check"></i>
<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>
接口是閤約
</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>
示例: 錶達式求值
</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>
基於類型斷言識彆錯誤類型
</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>
示例: 併髮的Clock服務
</a>
</li>
<li class="chapter " 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>
示例: 併髮的Echo服務
</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>
示例: 併髮的Web爬蟲
</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>
基於select的多路復用
</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>
示例: 併髮的字典遍歷
</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>
併髮的退齣
</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>
基於共享變量的併髮
</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>
內存衕步
</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>
示例: 併髮的非阻塞緩存
</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>
Goroutines和綫程
</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>
為何需要反射?
</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>
示例: 編碼S錶達式
</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>
示例: 解碼S錶達式
</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>
穫取結構體字段標識
</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>
<li class="chapter " data-level="14" data-path="exercise/ex.html">
<a href="../exercise/ex.html">
<i class="fa fa-check"></i>
<b>14.</b>
習題解答
</a>
<ul class="articles">
<li class="chapter " data-level="14.1" data-path="exercise/ex-ch1.html">
<a href="../exercise/ex-ch1.html">
<i class="fa fa-check"></i>
<b>14.1.</b>
第一章 入門
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="15" data-path="errata.html">
<a href="../errata.html">
<i class="fa fa-check"></i>
<b>15.</b>
勘誤
</a>
</li>
<li class="divider"></li>
<li>
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
本書使用 GitBook 釋出
</a>
</li>
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<h2 id="66-&#x5C01;&#x88DD;">6.6. &#x5C01;&#x88DD;</h2>
<p>&#x4E00;&#x500B;&#x5C0D;&#x8C61;&#x7684;&#x8B8A;&#x91CF;&#x6216;&#x8005;&#x65B9;&#x6CD5;&#x5982;&#x679C;&#x5C0D;&#x8ABF;&#x7528;&#x65B9;&#x662F;&#x4E0D;&#x53EF;&#x898B;&#x7684;&#x8A71;&#xFF0C;&#x4E00;&#x822C;&#x5C31;&#x88AB;&#x5B9A;&#x7FA9;&#x70BA;&#x201C;&#x5C01;&#x88DD;&#x201D;&#x3002;&#x5C01;&#x88DD;&#x6709;&#x6642;&#x5019;&#x4E5F;&#x88AB;&#x53EB;&#x505A;&#x4FE1;&#x606F;&#x96B1;&#x85CF;&#xFF0C;&#x8855;&#x6642;&#x4E5F;&#x662F;&#x9EAB;&#x66CF;&#x5C0D;&#x8C61;&#x7DE8;&#x7A0B;&#x6700;&#x95DC;&#x9375;&#x7684;&#x4E00;&#x500B;&#x65B9;&#x9EAB;&#x3002;</p>
<p>Go&#x8A9E;&#x8A00;&#x96BB;&#x6709;&#x4E00;&#x7A2E;&#x63A7;&#x88FD;&#x53EF;&#x898B;&#x6027;&#x7684;&#x624B;&#x6BB5;&#xFF1A;&#x5927;&#x5BEB;&#x9996;&#x5B57;&#x6BCD;&#x7684;&#x6A19;&#x8B58;&#x7B26;&#x6703;&#x5F9E;&#x5B9A;&#x7FA9;&#x5B83;&#x5011;&#x7684;&#x5305;&#x4E2D;&#x88AB;&#x5C0E;&#x9F63;&#xFF0C;&#x5C0F;&#x5BEB;&#x5B57;&#x6BCD;&#x7684;&#x5247;&#x4E0D;&#x6703;&#x3002;&#x9019;&#x7A2E;&#x9650;&#x88FD;&#x5305;&#x5167;&#x6210;&#x54E1;&#x7684;&#x65B9;&#x5F0F;&#x8855;&#x6A23;&#x9069;&#x7528;&#x65BC;struct&#x6216;&#x8005;&#x4E00;&#x500B;&#x985E;&#x578B;&#x7684;&#x65B9;&#x6CD5;&#x3002;&#x56E0;&#x800C;&#x5982;&#x679C;&#x6211;&#x5011;&#x60F3;&#x8981;&#x5C01;&#x88DD;&#x4E00;&#x500B;&#x5C0D;&#x8C61;&#xFF0C;&#x6211;&#x5011;&#x5FC5;&#x9B1A;&#x5C07;&#x5176;&#x5B9A;&#x7FA9;&#x70BA;&#x4E00;&#x500B;struct&#x3002;</p>
<p>&#x9019;&#x4E5F;&#x5C31;&#x662F;&#x524D;&#x9EAB;&#x7684;&#x5C0F;&#x7BC0;&#x4E2D;IntSet&#x88AB;&#x5B9A;&#x7FA9;&#x70BA;struct&#x985E;&#x578B;&#x7684;&#x539F;&#x56E0;&#xFF0C;&#x76E1;&#x7BA1;&#x5B83;&#x96BB;&#x6709;&#x4E00;&#x500B;&#x5B57;&#x6BB5;&#xFF1A;</p>
<pre><code class="lang-go"><span class="hljs-keyword">type</span> IntSet <span class="hljs-keyword">struct</span> {
words []<span class="hljs-typename">uint64</span>
}
</code></pre>
<p>&#x7576;&#x7136;&#xFF0C;&#x6211;&#x5011;&#x4E5F;&#x53EF;&#x4EE5;&#x628A;IntSet&#x5B9A;&#x7FA9;&#x70BA;&#x4E00;&#x500B;slice&#x985E;&#x578B;&#xFF0C;&#x76E1;&#x7BA1;&#x9019;&#x6A23;&#x6211;&#x5011;&#x5C31;&#x9700;&#x8981;&#x628A;&#x4EE3;&#x78BC;&#x4E2D;&#x6240;&#x6709;&#x65B9;&#x6CD5;&#x88CF;&#x7528;&#x5230;&#x7684;s.words&#x7528;*s&#x66FF;&#x63DB;&#x6389;&#x4E86;&#xFF1A;</p>
<pre><code class="lang-go"><span class="hljs-keyword">type</span> IntSet []<span class="hljs-typename">uint64</span>
</code></pre>
<p>&#x76E1;&#x7BA1;&#x9019;&#x500B;&#x7248;&#x672C;&#x7684;IntSet&#x5728;&#x672C;&#x8CEA;&#x4E0A;&#x662F;&#x4E00;&#x6A23;&#x7684;&#xFF0C;&#x4ED6;&#x4E5F;&#x53EF;&#x4EE5;&#x5141;&#x8A31;&#x5176;&#x5B83;&#x5305;&#x4E2D;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x8B80;&#x53D6;&#x4F75;&#x7DE8;&#x8F2F;&#x9019;&#x500B;slice&#x3002;&#x63DB;&#x53E5;&#x8A71;&#x8AAA;&#xFF0C;&#x76F8;&#x5C0D;*s&#x9019;&#x500B;&#x9336;&#x9054;&#x5F0F;&#x6703;&#x9F63;&#x73FE;&#x5728;&#x6240;&#x6709;&#x7684;&#x5305;&#x4E2D;&#xFF0C;s.words&#x96BB;&#x9700;&#x8981;&#x5728;&#x5B9A;&#x7FA9;IntSet&#x7684;&#x5305;&#x4E2D;&#x9F63;&#x73FE;(&#x8B6F;&#x8A3B;&#xFF1A;&#x6240;&#x4EE5;&#x9084;&#x662F;&#x63A8;&#x85A6;&#x5F8C;&#x8005;&#x5427;&#x7684;&#x610F;&#x601D;)&#x3002;</p>
<p>&#x9019;&#x7A2E;&#x57FA;&#x65BC;&#x540D;&#x5B57;&#x7684;&#x624B;&#x6BB5;&#x4F7F;&#x5F97;&#x5728;&#x8A9E;&#x8A00;&#x4E2D;&#x6700;&#x5C0F;&#x7684;&#x5C01;&#x88DD;&#x55AE;&#x5143;&#x662F;package&#xFF0C;&#x800C;&#x4E0D;&#x662F;&#x50CF;&#x5176;&#x5B83;&#x8A9E;&#x8A00;&#x4E00;&#x6A23;&#x7684;&#x985E;&#x578B;&#x3002;&#x4E00;&#x500B;struct&#x985E;&#x578B;&#x7684;&#x5B57;&#x6BB5;&#x5C0D;&#x8855;&#x4E00;&#x500B;&#x5305;&#x7684;&#x6240;&#x6709;&#x4EE3;&#x78BC;&#x90FD;&#x6709;&#x53EF;&#x898B;&#x6027;&#xFF0C;&#x7121;&#x8AD6;&#x4F60;&#x7684;&#x4EE3;&#x78BC;&#x662F;&#x5BEB;&#x5728;&#x4E00;&#x500B;&#x51FD;&#x6578;&#x9084;&#x662F;&#x4E00;&#x500B;&#x65B9;&#x6CD5;&#x88CF;&#x3002;</p>
<p>&#x5C01;&#x88DD;&#x63D0;&#x4F9B;&#x4E86;&#x4E09;&#x65B9;&#x9EAB;&#x7684;&#x512A;&#x9EDE;&#x3002;&#x9996;&#x5148;&#xFF0C;&#x56E0;&#x70BA;&#x8ABF;&#x7528;&#x65B9;&#x4E0D;&#x80FD;&#x76F4;&#x63A5;&#x8129;&#x6539;&#x5C0D;&#x8C61;&#x7684;&#x8B8A;&#x91CF;&#x503C;&#xFF0C;&#x5176;&#x96BB;&#x9700;&#x8981;&#x95DC;&#x8A3B;&#x5C11;&#x91CF;&#x7684;&#x8A9E;&#x53E5;&#x4F75;&#x4E14;&#x96BB;&#x8981;&#x5F04;&#x61C2;&#x5C11;&#x91CF;&#x8B8A;&#x91CF;&#x7684;&#x53EF;&#x80FD;&#x7684;&#x503C;&#x537D;&#x53EF;&#x3002;</p>
<p>&#x7B2C;&#x4E8C;&#xFF0C;&#x96B1;&#x85CF;&#x5BE6;&#x73FE;&#x7684;&#x7D30;&#x7BC0;&#xFF0C;&#x53EF;&#x4EE5;&#x9632;&#x6B62;&#x8ABF;&#x7528;&#x65B9;&#x4F9D;&#x8CF4;&#x90A3;&#x4E9B;&#x53EF;&#x80FD;&#x8B8A;&#x5316;&#x7684;&#x5177;&#x9AD4;&#x5BE6;&#x73FE;&#xFF0C;&#x9019;&#x6A23;&#x4F7F;&#x8A2D;&#x8A08;&#x5305;&#x7684;&#x7A0B;&#x5E8F;&#x54E1;&#x5728;&#x4E0D;&#x7834;&#x58DE;&#x5C0D;&#x5916;&#x7684;api&#x60C5;&#x6CC1;&#x4E0B;&#x80FD;&#x5F97;&#x5230;&#x66F4;&#x5927;&#x7684;&#x81EA;&#x7531;&#x3002;</p>
<p>&#x628A;bytes.Buffer&#x9019;&#x500B;&#x985E;&#x578B;&#x4F5C;&#x70BA;&#x4F8B;&#x5B50;&#x4F86;&#x8003;&#x616E;&#x3002;&#x9019;&#x500B;&#x985E;&#x578B;&#x5728;&#x505A;&#x77ED;&#x5B57;&#x7B26;&#x4E32;&#x758A;&#x52A0;&#x7684;&#x6642;&#x5019;&#x5F88;&#x5E38;&#x7528;&#xFF0C;&#x6240;&#x4EE5;&#x5728;&#x8A2D;&#x8A08;&#x7684;&#x6642;&#x5019;&#x53EF;&#x4EE5;&#x505A;&#x4E00;&#x4E9B;&#x9810;&#x5148;&#x7684;&#x512A;&#x5316;&#xFF0C;&#x6BD4;&#x5982;&#x63D0;&#x524D;&#x9810;&#x7559;&#x4E00;&#x90E8;&#x5206;&#x7A7A;&#x9593;&#xFF0C;&#x4F86;&#x907F;&#x514D;&#x53CD;&#x5FA9;&#x7684;&#x5167;&#x5B58;&#x5206;&#x914D;&#x3002;&#x53C8;&#x56E0;&#x70BA;Buffer&#x662F;&#x4E00;&#x500B;struct&#x985E;&#x578B;&#xFF0C;&#x9019;&#x4E9B;&#x984D;&#x5916;&#x7684;&#x7A7A;&#x9593;&#x53EF;&#x4EE5;&#x7528;&#x9644;&#x52A0;&#x7684;&#x5B57;&#x7BC0;&#x6578;&#x7D44;&#x4F86;&#x4FDD;&#x5B58;&#xFF0C;&#x4E14;&#x653E;&#x5728;&#x4E00;&#x500B;&#x5C0F;&#x5BEB;&#x5B57;&#x6BCD;&#x958B;&#x982D;&#x7684;&#x5B57;&#x6BB5;&#x4E2D;&#x3002;&#x9019;&#x6A23;&#x5728;&#x5916;&#x90E8;&#x7684;&#x8ABF;&#x7528;&#x65B9;&#x96BB;&#x80FD;&#x770B;&#x5230;&#x6027;&#x80FD;&#x7684;&#x63D0;&#x965E;&#xFF0C;&#x4F46;&#x4F75;&#x4E0D;&#x6703;&#x5F97;&#x5230;&#x9019;&#x500B;&#x9644;&#x52A0;&#x8B8A;&#x91CF;&#x3002;Buffer&#x548C;&#x5176;&#x589E;&#x9577;&#x7B97;&#x6CD5;&#x6211;&#x5011;&#x5217;&#x5728;&#x9019;&#x88CF;&#xFF0C;&#x70BA;&#x4E86;&#x7C21;&#x6F54;&#x6027;&#x7A0D;&#x5FAE;&#x505A;&#x4E86;&#x4E00;&#x4E9B;&#x7CBE;&#x7C21;&#xFF1A;</p>
<pre><code class="lang-go"><span class="hljs-keyword">type</span> Buffer <span class="hljs-keyword">struct</span> {
buf []<span class="hljs-typename">byte</span>
initial [<span class="hljs-number">64</span>]<span class="hljs-typename">byte</span>
<span class="hljs-comment">/* ... */</span>
}
<span class="hljs-comment">// Grow expands the buffer&apos;s capacity, if necessary,</span>
<span class="hljs-comment">// to guarantee space for another n bytes. [...]</span>
<span class="hljs-keyword">func</span> (b *Buffer) Grow(n <span class="hljs-typename">int</span>) {
<span class="hljs-keyword">if</span> b.buf == <span class="hljs-constant">nil</span> {
b.buf = b.initial[:<span class="hljs-number">0</span>] <span class="hljs-comment">// use preallocated space initially</span>
}
<span class="hljs-keyword">if</span> <span class="hljs-built_in">len</span>(b.buf)+n &gt; <span class="hljs-built_in">cap</span>(b.buf) {
buf := <span class="hljs-built_in">make</span>([]<span class="hljs-typename">byte</span>, b.Len(), <span class="hljs-number">2</span>*<span class="hljs-built_in">cap</span>(b.buf) + n)
<span class="hljs-built_in">copy</span>(buf, b.buf)
b.buf = buf
}
}
</code></pre>
<p>&#x5C01;&#x88DD;&#x7684;&#x7B2C;&#x4E09;&#x500B;&#x512A;&#x9EDE;&#x4E5F;&#x662F;&#x6700;&#x91CD;&#x8981;&#x7684;&#x512A;&#x9EDE;&#xFF0C;&#x662F;&#x963B;&#x6B62;&#x4E86;&#x5916;&#x90E8;&#x8ABF;&#x7528;&#x65B9;&#x5C0D;&#x5C0D;&#x8C61;&#x5167;&#x90E8;&#x7684;&#x503C;&#x4EFB;&#x610F;&#x5730;&#x9032;&#x884C;&#x8129;&#x6539;&#x3002;&#x56E0;&#x70BA;&#x5C0D;&#x8C61;&#x5167;&#x90E8;&#x8B8A;&#x91CF;&#x96BB;&#x53EF;&#x4EE5;&#x88AB;&#x8855;&#x4E00;&#x500B;&#x5305;&#x5167;&#x7684;&#x51FD;&#x6578;&#x8129;&#x6539;&#xFF0C;&#x6240;&#x4EE5;&#x5305;&#x7684;&#x4F5C;&#x8005;&#x53EF;&#x4EE5;&#x8B93;&#x9019;&#x4E9B;&#x51FD;&#x6578;&#x78BA;&#x4FDD;&#x5C0D;&#x8C61;&#x5167;&#x90E8;&#x7684;&#x4E00;&#x4E9B;&#x503C;&#x7684;&#x4E0D;&#x8B8A;&#x6027;&#x3002;&#x6BD4;&#x5982;&#x4E0B;&#x9EAB;&#x7684;Counter&#x985E;&#x578B;&#x5141;&#x8A31;&#x8ABF;&#x7528;&#x65B9;&#x4F86;&#x589E;&#x52A0;counter&#x8B8A;&#x91CF;&#x7684;&#x503C;&#xFF0C;&#x4F75;&#x4E14;&#x5141;&#x8A31;&#x5C07;&#x9019;&#x500B;&#x503C;reset&#x70BA;0&#xFF0C;&#x4F46;&#x662F;&#x4E0D;&#x5141;&#x8A31;&#x96A8;&#x4FBF;&#x8A2D;&#x7F6E;&#x9019;&#x500B;&#x503C;(&#x8B6F;&#x8A3B;&#xFF1A;&#x56E0;&#x70BA;&#x58D3;&#x6839;&#x5C31;&#x8A2A;&#x554F;&#x4E0D;&#x5230;)&#xFF1A;</p>
<pre><code class="lang-go"><span class="hljs-keyword">type</span> Counter <span class="hljs-keyword">struct</span> { n <span class="hljs-typename">int</span> }
<span class="hljs-keyword">func</span> (c *Counter) N() <span class="hljs-typename">int</span> { <span class="hljs-keyword">return</span> c.n }
<span class="hljs-keyword">func</span> (c *Counter) Increment() { c.n++ }
<span class="hljs-keyword">func</span> (c *Counter) Reset() { c.n = <span class="hljs-number">0</span> }
</code></pre>
<p>&#x96BB;&#x7528;&#x4F86;&#x8A2A;&#x554F;&#x6216;&#x8129;&#x6539;&#x5167;&#x90E8;&#x8B8A;&#x91CF;&#x7684;&#x51FD;&#x6578;&#x88AB;&#x7A31;&#x70BA;setter&#x6216;&#x8005;getter&#xFF0C;&#x4F8B;&#x5B50;&#x5982;&#x4E0B;&#xFF0C;&#x6BD4;&#x5982;log&#x5305;&#x88CF;&#x7684;Logger&#x985E;&#x578B;&#x5C0D;&#x61C9;&#x7684;&#x4E00;&#x4E9B;&#x51FD;&#x6578;&#x3002;&#x5728;&#x547D;&#x540D;&#x4E00;&#x500B;getter&#x65B9;&#x6CD5;&#x6642;&#xFF0C;&#x6211;&#x5011;&#x901A;&#x5E38;&#x6703;&#x7701;&#x7565;&#x6389;&#x524D;&#x9EAB;&#x7684;Get&#x524D;&#x7DB4;&#x3002;&#x9019;&#x7A2E;&#x7C21;&#x6F54;&#x4E0A;&#x7684;&#x504F;&#x597D;&#x4E5F;&#x53EF;&#x4EE5;&#x63A8;&#x5EE3;&#x5230;&#x5404;&#x7A2E;&#x985E;&#x578B;&#x7684;&#x524D;&#x7DB4;&#x6BD4;&#x5982;Fetch&#xFF0C;Find&#x6216;&#x8005;Lookup&#x3002;</p>
<pre><code class="lang-go"><span class="hljs-keyword">package</span> log
<span class="hljs-keyword">type</span> Logger <span class="hljs-keyword">struct</span> {
flags <span class="hljs-typename">int</span>
prefix <span class="hljs-typename">string</span>
<span class="hljs-comment">// ...</span>
}
<span class="hljs-keyword">func</span> (l *Logger) Flags() <span class="hljs-typename">int</span>
<span class="hljs-keyword">func</span> (l *Logger) SetFlags(flag <span class="hljs-typename">int</span>)
<span class="hljs-keyword">func</span> (l *Logger) Prefix() <span class="hljs-typename">string</span>
<span class="hljs-keyword">func</span> (l *Logger) SetPrefix(prefix <span class="hljs-typename">string</span>)
</code></pre>
<p>Go&#x7684;&#x7DE8;&#x78BC;&#x98A8;&#x683C;&#x4E0D;&#x7981;&#x6B62;&#x76F4;&#x63A5;&#x5C0E;&#x9F63;&#x5B57;&#x6BB5;&#x3002;&#x7576;&#x7136;&#xFF0C;&#x4E00;&#x65E6;&#x9032;&#x884C;&#x4E86;&#x5C0E;&#x9F63;&#xFF0C;&#x5C31;&#x6C92;&#x6709;&#x8FA6;&#x6CD5;&#x5728;&#x4FDD;&#x8B49;API&#x517C;&#x5BB9;&#x7684;&#x60C5;&#x6CC1;&#x4E0B;&#x53BB;&#x9664;&#x5C0D;&#x5176;&#x7684;&#x5C0E;&#x9F63;&#xFF0C;&#x6240;&#x4EE5;&#x5728;&#x4E00;&#x958B;&#x59CB;&#x7684;&#x9078;&#x64C7;&#x4E00;&#x5B9A;&#x8981;&#x7D93;&#x904E;&#x6DF1;&#x601D;&#x719F;&#x616E;&#x4F75;&#x4E14;&#x8981;&#x8003;&#x616E;&#x5230;&#x5305;&#x5167;&#x90E8;&#x7684;&#x4E00;&#x4E9B;&#x4E0D;&#x8B8A;&#x91CF;&#x7684;&#x4FDD;&#x8B49;&#xFF0C;&#x672A;&#x4F86;&#x53EF;&#x80FD;&#x7684;&#x8B8A;&#x5316;&#xFF0C;&#x4EE5;&#x53CA;&#x8ABF;&#x7528;&#x65B9;&#x7684;&#x4EE3;&#x78BC;&#x8CEA;&#x91CF;&#x662F;&#x5426;&#x6703;&#x56E0;&#x70BA;&#x5305;&#x7684;&#x4E00;&#x9EDE;&#x8129;&#x6539;&#x800C;&#x8B8A;&#x5DEE;&#x3002;</p>
<p>&#x5C01;&#x88DD;&#x4F75;&#x4E0D;&#x7E3D;&#x662F;&#x7406;&#x60F3;&#x7684;&#x3002;
&#x96D6;&#x7136;&#x5C01;&#x88DD;&#x5728;&#x6709;&#x4E9B;&#x60C5;&#x6CC1;&#x662F;&#x5FC5;&#x8981;&#x7684;&#xFF0C;&#x4F46;&#x6709;&#x6642;&#x5019;&#x6211;&#x5011;&#x4E5F;&#x9700;&#x8981;&#x66B4;&#x9732;&#x4E00;&#x4E9B;&#x5167;&#x90E8;&#x5167;&#x5BB9;&#xFF0C;&#x6BD4;&#x5982;&#xFF1A;time.Duration&#x5C07;&#x5176;&#x9336;&#x73FE;&#x66B4;&#x9732;&#x70BA;&#x4E00;&#x500B;int64&#x6578;&#x5B57;&#x7684;&#x7D0D;&#x79D2;&#xFF0C;&#x4F7F;&#x5F97;&#x6211;&#x5011;&#x53EF;&#x4EE5;&#x7528;&#x4E00;&#x822C;&#x7684;&#x6578;&#x503C;&#x64CD;&#x4F5C;&#x4F86;&#x5C0D;&#x6642;&#x9593;&#x9032;&#x884C;&#x5C0D;&#x6BD4;&#xFF0C;&#x751A;&#x81F3;&#x53EF;&#x4EE5;&#x5B9A;&#x7FA9;&#x9019;&#x7A2E;&#x985E;&#x578B;&#x7684;&#x5E38;&#x91CF;&#xFF1A;</p>
<pre><code class="lang-go"><span class="hljs-keyword">const</span> day = <span class="hljs-number">24</span> * time.Hour
fmt.Println(day.Seconds()) <span class="hljs-comment">// &quot;86400&quot;</span>
</code></pre>
<p>&#x53E6;&#x4E00;&#x500B;&#x4F8B;&#x5B50;&#xFF0C;&#x5C07;IntSet&#x548C;&#x672C;&#x7AE0;&#x958B;&#x982D;&#x7684;geometry.Path&#x9032;&#x884C;&#x5C0D;&#x6BD4;&#x3002;Path&#x88AB;&#x5B9A;&#x7FA9;&#x70BA;&#x4E00;&#x500B;slice&#x985E;&#x578B;&#xFF0C;&#x9019;&#x5141;&#x8A31;&#x5176;&#x8ABF;&#x7528;slice&#x7684;&#x5B57;&#x9EAB;&#x65B9;&#x6CD5;&#x4F86;&#x5C0D;&#x5176;&#x5167;&#x90E8;&#x7684;points&#x7528;range&#x9032;&#x884C;&#x8FED;&#x4EE3;&#x904D;&#x6B77;&#xFF1B;&#x5728;&#x9019;&#x4E00;&#x9EDE;&#x4E0A;&#xFF0C;IntSet&#x662F;&#x6C92;&#x6709;&#x8FA6;&#x6CD5;&#x8B93;&#x4F60;&#x9019;&#x9EBC;&#x505A;&#x7684;&#x3002;</p>
<p>&#x9019;&#x5169;&#x7A2E;&#x985E;&#x578B;&#x6C7A;&#x5B9A;&#x6027;&#x7684;&#x4E0D;&#x8855;&#xFF1A;geometry.Path&#x7684;&#x672C;&#x8CEA;&#x662F;&#x4E00;&#x500B;&#x5750;&#x6A19;&#x9EDE;&#x7684;&#x5E8F;&#x5217;&#xFF0C;&#x4E0D;&#x591A;&#x4E5F;&#x4E0D;&#x5C11;&#xFF0C;&#x6211;&#x5011;&#x53EF;&#x4EE5;&#x9810;&#x898B;&#x5230;&#x4E4B;&#x5F8C;&#x4E5F;&#x4F75;&#x4E0D;&#x6703;&#x7D66;&#x4ED6;&#x589E;&#x52A0;&#x984D;&#x5916;&#x7684;&#x5B57;&#x6BB5;&#xFF0C;&#x6240;&#x4EE5;&#x5728;geometry&#x5305;&#x4E2D;&#x5C07;Path&#x66B4;&#x9732;&#x70BA;&#x4E00;&#x500B;slice&#x3002;&#x76F8;&#x6BD4;&#x4E4B;&#x4E0B;&#xFF0C;IntSet&#x50C5;&#x50C5;&#x662F;&#x5728;&#x9019;&#x88CF;&#x7528;&#x4E86;&#x4E00;&#x500B;[]uint64&#x7684;slice&#x3002;&#x9019;&#x500B;&#x985E;&#x578B;&#x9084;&#x53EF;&#x4EE5;&#x7528;[]uint&#x985E;&#x578B;&#x4F86;&#x9336;&#x793A;&#xFF0C;&#x6216;&#x8005;&#x6211;&#x5011;&#x751A;&#x81F3;&#x53EF;&#x4EE5;&#x7528;&#x5176;&#x5B83;&#x5B8C;&#x5168;&#x4E0D;&#x8855;&#x7684;&#x4F54;&#x7528;&#x66F4;&#x5C0F;&#x5167;&#x5B58;&#x7A7A;&#x9593;&#x7684;&#x6771;&#x897F;&#x4F86;&#x9336;&#x793A;&#x9019;&#x500B;&#x96C6;&#x95A4;&#xFF0C;&#x6240;&#x4EE5;&#x6211;&#x5011;&#x53EF;&#x80FD;&#x9084;&#x6703;&#x9700;&#x8981;&#x984D;&#x5916;&#x7684;&#x5B57;&#x6BB5;&#x4F86;&#x5728;&#x9019;&#x500B;&#x985E;&#x578B;&#x4E2D;&#x8A18;&#x5F54;&#x5143;&#x7D20;&#x7684;&#x500B;&#x6578;&#x3002;&#x4E5F;&#x6B63;&#x662F;&#x56E0;&#x70BA;&#x9019;&#x4E9B;&#x539F;&#x56E0;&#xFF0C;&#x6211;&#x5011;&#x8B93;IntSet&#x5C0D;&#x8ABF;&#x7528;&#x65B9;&#x900F;&#x660E;&#x3002;</p>
<p>&#x5728;&#x9019;&#x7AE0;&#x4E2D;&#xFF0C;&#x6211;&#x5011;&#x5B78;&#x5230;&#x4E86;&#x5982;&#x4F55;&#x5C07;&#x65B9;&#x6CD5;&#x8207;&#x547D;&#x540D;&#x985E;&#x578B;&#x9032;&#x884C;&#x7D44;&#x95A4;&#xFF0C;&#x4F75;&#x4E14;&#x77E5;&#x9053;&#x4E86;&#x5982;&#x4F55;&#x8ABF;&#x7528;&#x9019;&#x4E9B;&#x65B9;&#x6CD5;&#x3002;&#x76E1;&#x7BA1;&#x65B9;&#x6CD5;&#x5C0D;&#x65BC;OOP&#x7DE8;&#x7A0B;&#x4F86;&#x8AAA;&#x81F3;&#x95DC;&#x91CD;&#x8981;&#xFF0C;&#x4F46;&#x4ED6;&#x5011;&#x96BB;&#x662F;OOP&#x7DE8;&#x7A0B;&#x88CF;&#x7684;&#x534A;&#x908A;&#x5929;&#x3002;&#x70BA;&#x4E86;&#x5B8C;&#x6210;OOP&#xFF0C;&#x6211;&#x5011;&#x9084;&#x9700;&#x8981;&#x63A5;&#x53E3;&#x3002;Go&#x88CF;&#x7684;&#x63A5;&#x53E3;&#x6703;&#x5728;&#x4E0B;&#x4E00;&#x7AE0;&#x4E2D;&#x4ECB;&#x7D39;&#x3002;</p>
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