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<title>示例: 深度相等判斷 | Go编程语言</title>
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<div class="book" data-level="13.3" data-chapter-title="示例: 深度相等判斷" data-filepath="ch13/ch13-03.md" data-basepath=".." data-revision="Mon Dec 28 2015 16:03:52 GMT+0800 (中国标准时间)">
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前言
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<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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<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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<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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<a href="../ch1/ch1-04.html">
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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">
<a href="../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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</a>
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<a href="../ch1/ch1-07.html">
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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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<li class="chapter " data-level="2.2" data-path="ch2/ch2-02.html">
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<b>2.2.</b>
聲明
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<li class="chapter " data-level="2.3" data-path="ch2/ch2-03.html">
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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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<b>3.2.</b>
浮點數
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<li class="chapter " data-level="3.3" data-path="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">
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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">
<a href="../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>
切片
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</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>
字典
</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
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<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">
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<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">
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<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">
<i class="fa fa-check"></i>
<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 " 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>
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示例: 併發的Web爬蟲
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</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>
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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>
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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 active" 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">
2015-12-09 07:57:17 +00:00
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>
2015-12-09 07:57:17 +00:00
2015-12-24 06:47:06 +00:00
附録
2015-12-09 07:57:17 +00:00
</a>
</li>
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<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
本書使用 GitBook 釋出
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<h2 id="133-&#x793A;&#x4F8B;-&#x6DF1;&#x5EA6;&#x76F8;&#x7B49;&#x5224;&#x65B7;">13.3. &#x793A;&#x4F8B;: &#x6DF1;&#x5EA6;&#x76F8;&#x7B49;&#x5224;&#x65B7;</h2>
2015-12-24 06:47:06 +00:00
<p>&#x4F86;&#x81EA;reflect&#x5305;&#x7684;DeepEqual&#x51FD;&#x6578;&#x53EF;&#x4EE5;&#x5C0D;&#x5169;&#x500B;&#x503C;&#x9032;&#x884C;&#x6DF1;&#x5EA6;&#x76F8;&#x7B49;&#x5224;&#x65B7;&#x3002;DeepEqual&#x51FD;&#x6578;&#x4F7F;&#x7528;&#x5167;&#x5EFA;&#x7684;==&#x6BD4;&#x8F03;&#x64CD;&#x4F5C;&#x7B26;&#x5C0D;&#x57FA;&#x790E;&#x985E;&#x578B;&#x9032;&#x884C;&#x76F8;&#x7B49;&#x5224;&#x65B7;&#xFF0C;&#x5C0D;&#x65BC;&#x8907;&#x5408;&#x985E;&#x578B;&#x5247;&#x905E;&#x6B78;&#x8A72;&#x8B8A;&#x91CF;&#x7684;&#x6BCF;&#x500B;&#x57FA;&#x790E;&#x985E;&#x578B;&#x7136;&#x5F8C;&#x505A;&#x985E;&#x4F3C;&#x7684;&#x6BD4;&#x8F03;&#x5224;&#x65B7;&#x3002;&#x56E0;&#x7232;&#x5B83;&#x53EF;&#x4EE5;&#x5DE5;&#x4F5C;&#x5728;&#x4EFB;&#x610F;&#x7684;&#x985E;&#x578B;&#x4E0A;&#xFF0C;&#x751A;&#x81F3;&#x5C0D;&#x65BC;&#x4E00;&#x4E9B;&#x4E0D;&#x652F;&#x6301;==&#x64CD;&#x4F5C;&#x904B;&#x7B97;&#x7B26;&#x7684;&#x985E;&#x578B;&#x4E5F;&#x53EF;&#x4EE5;&#x5DE5;&#x4F5C;&#xFF0C;&#x56E0;&#x6B64;&#x5728;&#x4E00;&#x4E9B;&#x6E2C;&#x8A66;&#x4EE3;&#x78BC;&#x4E2D;&#x5EE3;&#x6CDB;&#x5730;&#x4F7F;&#x7528;&#x8A72;&#x51FD;&#x6578;&#x3002;&#x6BD4;&#x5982;&#x4E0B;&#x9762;&#x7684;&#x4EE3;&#x78BC;&#x662F;&#x7528;DeepEqual&#x51FD;&#x6578;&#x6BD4;&#x8F03;&#x5169;&#x500B;&#x5B57;&#x7B26;&#x4E32;&#x6578;&#x7D44;&#x662F;&#x5426;&#x76F8;&#x7B49;&#x3002;</p>
2015-12-09 07:57:17 +00:00
<pre><code class="lang-Go"><span class="hljs-keyword">func</span> TestSplit(t *testing.T) {
got := strings.Split(<span class="hljs-string">&quot;a:b:c&quot;</span>, <span class="hljs-string">&quot;:&quot;</span>)
want := []<span class="hljs-typename">string</span>{<span class="hljs-string">&quot;a&quot;</span>, <span class="hljs-string">&quot;b&quot;</span>, <span class="hljs-string">&quot;c&quot;</span>};
<span class="hljs-keyword">if</span> !reflect.DeepEqual(got, want) { <span class="hljs-comment">/* ... */</span> }
}
</code></pre>
2015-12-24 06:47:06 +00:00
<p>&#x76E1;&#x7BA1;DeepEqual&#x51FD;&#x6578;&#x5F88;&#x65B9;&#x4FBF;&#xFF0C;&#x800C;&#x4E14;&#x53EF;&#x4EE5;&#x652F;&#x6301;&#x4EFB;&#x610F;&#x7684;&#x6578;&#x64DA;&#x985E;&#x578B;&#xFF0C;&#x4F46;&#x662F;&#x5B83;&#x4E5F;&#x6709;&#x4E0D;&#x8DB3;&#x4E4B;&#x8655;&#x3002;&#x4F8B;&#x5982;&#xFF0C;&#x5B83;&#x5C07;&#x4E00;&#x500B;nil&#x503C;&#x7684;map&#x548C;&#x975E;nil&#x503C;&#x4F46;&#x662F;&#x7A7A;&#x7684;map&#x8996;&#x4F5C;&#x4E0D;&#x76F8;&#x7B49;&#xFF0C;&#x540C;&#x6A23;nil&#x503C;&#x7684;slice &#x548C;&#x975E;nil&#x4F46;&#x662F;&#x7A7A;&#x7684;slice&#x4E5F;&#x8996;&#x4F5C;&#x4E0D;&#x76F8;&#x7B49;&#x3002;</p>
2015-12-09 07:57:17 +00:00
<pre><code class="lang-Go"><span class="hljs-keyword">var</span> a, b []<span class="hljs-typename">string</span> = <span class="hljs-constant">nil</span>, []<span class="hljs-typename">string</span>{}
fmt.Println(reflect.DeepEqual(a, b)) <span class="hljs-comment">// &quot;false&quot;</span>
<span class="hljs-keyword">var</span> c, d <span class="hljs-keyword">map</span>[<span class="hljs-typename">string</span>]<span class="hljs-typename">int</span> = <span class="hljs-constant">nil</span>, <span class="hljs-built_in">make</span>(<span class="hljs-keyword">map</span>[<span class="hljs-typename">string</span>]<span class="hljs-typename">int</span>)
fmt.Println(reflect.DeepEqual(c, d)) <span class="hljs-comment">// &quot;false&quot;</span>
</code></pre>
2015-12-24 06:47:06 +00:00
<p>&#x6211;&#x5011;&#x5E0C;&#x671B;&#x5728;&#x9019;&#x91CC;&#x5BE6;&#x73FE;&#x4E00;&#x500B;&#x81EA;&#x5DF1;&#x7684;Equal&#x51FD;&#x6578;&#xFF0C;&#x7528;&#x65BC;&#x6BD4;&#x8F03;&#x985E;&#x578B;&#x7684;&#x503C;&#x3002;&#x548C;DeepEqual&#x51FD;&#x6578;&#x985E;&#x4F3C;&#x7684;&#x5730;&#x65B9;&#x662F;&#x5B83;&#x4E5F;&#x662F;&#x57FA;&#x65BC;slice&#x548C;map&#x7684;&#x6BCF;&#x500B;&#x5143;&#x7D20;&#x9032;&#x884C;&#x905E;&#x6B78;&#x6BD4;&#x8F03;&#xFF0C;&#x4E0D;&#x540C;&#x4E4B;&#x8655;&#x662F;&#x5B83;&#x5C07;nil&#x503C;&#x7684;slice&#xFF08;map&#x985E;&#x4F3C;&#xFF09;&#x548C;&#x975E;nil&#x503C;&#x4F46;&#x662F;&#x7A7A;&#x7684;slice&#x8996;&#x4F5C;&#x76F8;&#x7B49;&#x7684;&#x503C;&#x3002;&#x57FA;&#x790E;&#x90E8;&#x5206;&#x7684;&#x6BD4;&#x8F03;&#x53EF;&#x4EE5;&#x57FA;&#x65BC;reflect&#x5305;&#x5B8C;&#x6210;&#xFF0C;&#x548C;12.3&#x7AE0;&#x7684;Display&#x51FD;&#x6578;&#x7684;&#x5BE6;&#x73FE;&#x65B9;&#x6CD5;&#x985E;&#x4F3C;&#x3002;&#x540C;&#x6A23;&#xFF0C;&#x6211;&#x5011;&#x4E5F;&#x5B9A;&#x7FA9;&#x4E86;&#x4E00;&#x500B;&#x5167;&#x90E8;&#x51FD;&#x6578;equal&#xFF0C;&#x7528;&#x65BC;&#x5167;&#x90E8;&#x7684;&#x905E;&#x6B78;&#x6BD4;&#x8F03;&#x3002;&#x8B80;&#x8005;&#x76EE;&#x524D;&#x4E0D;&#x7528;&#x95DC;&#x5FC3;seen&#x53C3;&#x6578;&#x7684;&#x5177;&#x9AD4;&#x542B;&#x7FA9;&#x3002;&#x5C0D;&#x65BC;&#x6BCF;&#x4E00;&#x5C0D;&#x9700;&#x8981;&#x6BD4;&#x8F03;&#x7684;x&#x548C;y&#xFF0C;equal&#x51FD;&#x6578;&#x9996;&#x5148;&#x6AA2;&#x6E2C;&#x5B83;&#x5011;&#x662F;&#x5426;&#x90FD;&#x6709;&#x6548;&#xFF08;&#x6216;&#x90FD;&#x7121;&#x6548;&#xFF09;&#xFF0C;&#x7136;&#x5F8C;&#x6AA2;&#x6E2C;&#x5B83;&#x5011;&#x662F;&#x5426;&#x662F;&#x76F8;&#x540C;&#x7684;&#x985E;&#x578B;&#x3002;&#x5269;&#x4E0B;&#x7684;&#x90E8;&#x5206;&#x662F;&#x4E00;&#x500B;&#x9245;&#x5927;&#x7684;switch&#x5206;&#x652F;&#xFF0C;&#x7528;&#x65BC;&#x76F8;&#x540C;&#x57FA;&#x790E;&#x985E;&#x578B;&#x7684;&#x5143;&#x7D20;&#x6BD4;&#x8F03;&#x3002;&#x56E0;&#x7232;&#x9801;&#x9762;&#x7A7A;&#x9593;&#x7684;&#x9650;&#x88FD;&#xFF0C;&#x6211;&#x5011;&#x7701;&#x7565;&#x4E86;&#x4E00;&#x4E9B;&#x76F8;&#x4F3C;&#x7684;&#x5206;&#x652F;&#x3002;</p>
2015-12-09 07:57:17 +00:00
<pre><code class="lang-Go">gopl.io/ch13/equal
<span class="hljs-keyword">func</span> equal(x, y reflect.Value, seen <span class="hljs-keyword">map</span>[comparison]<span class="hljs-typename">bool</span>) <span class="hljs-typename">bool</span> {
<span class="hljs-keyword">if</span> !x.IsValid() || !y.IsValid() {
<span class="hljs-keyword">return</span> x.IsValid() == y.IsValid()
}
<span class="hljs-keyword">if</span> x.Type() != y.Type() {
<span class="hljs-keyword">return</span> <span class="hljs-constant">false</span>
}
<span class="hljs-comment">// ...cycle check omitted (shown later)...</span>
<span class="hljs-keyword">switch</span> x.Kind() {
<span class="hljs-keyword">case</span> reflect.Bool:
<span class="hljs-keyword">return</span> x.Bool() == y.Bool()
<span class="hljs-keyword">case</span> reflect.String:
<span class="hljs-keyword">return</span> x.String() == y.String()
<span class="hljs-comment">// ...numeric cases omitted for brevity...</span>
<span class="hljs-keyword">case</span> reflect.Chan, reflect.UnsafePointer, reflect.Func:
<span class="hljs-keyword">return</span> x.Pointer() == y.Pointer()
<span class="hljs-keyword">case</span> reflect.Ptr, reflect.Interface:
<span class="hljs-keyword">return</span> equal(x.Elem(), y.Elem(), seen)
<span class="hljs-keyword">case</span> reflect.Array, reflect.Slice:
<span class="hljs-keyword">if</span> x.Len() != y.Len() {
<span class="hljs-keyword">return</span> <span class="hljs-constant">false</span>
}
<span class="hljs-keyword">for</span> i := <span class="hljs-number">0</span>; i &lt; x.Len(); i++ {
<span class="hljs-keyword">if</span> !equal(x.Index(i), y.Index(i), seen) {
<span class="hljs-keyword">return</span> <span class="hljs-constant">false</span>
}
}
<span class="hljs-keyword">return</span> <span class="hljs-constant">true</span>
<span class="hljs-comment">// ...struct and map cases omitted for brevity...</span>
}
<span class="hljs-built_in">panic</span>(<span class="hljs-string">&quot;unreachable&quot;</span>)
}
</code></pre>
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<p>&#x548C;&#x524D;&#x9762;&#x7684;&#x5EFA;&#x8B70;&#x4E00;&#x6A23;&#xFF0C;&#x6211;&#x5011;&#x4F75;&#x4E0D;&#x516C;&#x958B;reflect&#x5305;&#x76F8;&#x95DC;&#x7684;&#x63A5;&#x53E3;&#xFF0C;&#x6240;&#x4EE5;&#x5C0E;&#x51FA;&#x7684;&#x51FD;&#x6578;&#x9700;&#x8981;&#x5728;&#x5167;&#x90E8;&#x81EA;&#x5DF1;&#x5C07;&#x8B8A;&#x91CF;&#x8F49;&#x7232;reflect.Value&#x985E;&#x578B;&#x3002;</p>
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<pre><code class="lang-Go"><span class="hljs-comment">// Equal reports whether x and y are deeply equal.</span>
<span class="hljs-keyword">func</span> Equal(x, y <span class="hljs-keyword">interface</span>{}) <span class="hljs-typename">bool</span> {
seen := <span class="hljs-built_in">make</span>(<span class="hljs-keyword">map</span>[comparison]<span class="hljs-typename">bool</span>)
<span class="hljs-keyword">return</span> equal(reflect.ValueOf(x), reflect.ValueOf(y), seen)
}
<span class="hljs-keyword">type</span> comparison <span class="hljs-keyword">struct</span> {
x, y unsafe.Pointer
treflect.Type
}
</code></pre>
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<p>&#x7232;&#x4E86;&#x78BA;&#x4FDD;&#x7B97;&#x6CD5;&#x5C0D;&#x65BC;&#x6709;&#x74B0;&#x7684;&#x6578;&#x64DA;&#x7D50;&#x69CB;&#x4E5F;&#x80FD;&#x6B63;&#x5E38;&#x9000;&#x51FA;&#xFF0C;&#x6211;&#x5011;&#x5FC5;&#x9B1A;&#x8A18;&#x9332;&#x6BCF;&#x6B21;&#x5DF2;&#x7D93;&#x6BD4;&#x8F03;&#x7684;&#x8B8A;&#x91CF;&#xFF0C;&#x5F9E;&#x800C;&#x907F;&#x514D;&#x9032;&#x5165;&#x7B2C;&#x4E8C;&#x6B21;&#x7684;&#x6BD4;&#x8F03;&#x3002;Equal&#x51FD;&#x6578;&#x5206;&#x914D;&#x4E86;&#x4E00;&#x7D44;&#x7528;&#x65BC;&#x6BD4;&#x8F03;&#x7684;&#x7D50;&#x69CB;&#x9AD4;&#xFF0C;&#x5305;&#x542B;&#x6BCF;&#x5C0D;&#x6BD4;&#x8F03;&#x5C0D;&#x8C61;&#x7684;&#x5730;&#x5740;&#xFF08;unsafe.Pointer&#x5F62;&#x5F0F;&#x4FDD;&#x5B58;&#xFF09;&#x548C;&#x985E;&#x578B;&#x3002;&#x6211;&#x5011;&#x8981;&#x8A18;&#x9332;&#x985E;&#x578B;&#x7684;&#x539F;&#x56E0;&#x662F;&#xFF0C;&#x6709;&#x4E9B;&#x4E0D;&#x540C;&#x7684;&#x8B8A;&#x91CF;&#x53EF;&#x80FD;&#x5C0D;&#x61C9;&#x76F8;&#x540C;&#x7684;&#x5730;&#x5740;&#x3002;&#x4F8B;&#x5982;&#xFF0C;&#x5982;&#x679C;x&#x548C;y&#x90FD;&#x662F;&#x6578;&#x7D44;&#x985E;&#x578B;&#xFF0C;&#x90A3;&#x9EBD;x&#x548C;x[0]&#x5C07;&#x5C0D;&#x61C9;&#x76F8;&#x540C;&#x7684;&#x5730;&#x5740;&#xFF0C;y&#x548C;y[0]&#x4E5F;&#x662F;&#x5C0D;&#x61C9;&#x76F8;&#x540C;&#x7684;&#x5730;&#x5740;&#xFF0C;&#x9019;&#x53EF;&#x4EE5;&#x7528;&#x65BC;&#x5340;&#x5206;x&#x8207;y&#x4E4B;&#x9593;&#x7684;&#x6BD4;&#x8F03;&#x6216;x[0]&#x8207;y[0]&#x4E4B;&#x9593;&#x7684;&#x6BD4;&#x8F03;&#x662F;&#x5426;&#x9032;&#x884C;&#x904E;&#x4E86;&#x3002;</p>
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<pre><code class="lang-Go"><span class="hljs-comment">// cycle check</span>
<span class="hljs-keyword">if</span> x.CanAddr() &amp;&amp; y.CanAddr() {
xptr := unsafe.Pointer(x.UnsafeAddr())
yptr := unsafe.Pointer(y.UnsafeAddr())
<span class="hljs-keyword">if</span> xptr == yptr {
<span class="hljs-keyword">return</span> <span class="hljs-constant">true</span> <span class="hljs-comment">// identical references</span>
}
c := comparison{xptr, yptr, x.Type()}
<span class="hljs-keyword">if</span> seen[c] {
<span class="hljs-keyword">return</span> <span class="hljs-constant">true</span> <span class="hljs-comment">// already seen</span>
}
seen[c] = <span class="hljs-constant">true</span>
}
</code></pre>
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<p>&#x9019;&#x662F;Equal&#x51FD;&#x6578;&#x7528;&#x6CD5;&#x7684;&#x4F8B;&#x5B50;:</p>
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<pre><code class="lang-Go">fmt.Println(Equal([]<span class="hljs-typename">int</span>{<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>}, []<span class="hljs-typename">int</span>{<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>})) <span class="hljs-comment">// &quot;true&quot;</span>
fmt.Println(Equal([]<span class="hljs-typename">string</span>{<span class="hljs-string">&quot;foo&quot;</span>}, []<span class="hljs-typename">string</span>{<span class="hljs-string">&quot;bar&quot;</span>})) <span class="hljs-comment">// &quot;false&quot;</span>
fmt.Println(Equal([]<span class="hljs-typename">string</span>(<span class="hljs-constant">nil</span>), []<span class="hljs-typename">string</span>{})) <span class="hljs-comment">// &quot;true&quot;</span>
fmt.Println(Equal(<span class="hljs-keyword">map</span>[<span class="hljs-typename">string</span>]<span class="hljs-typename">int</span>(<span class="hljs-constant">nil</span>), <span class="hljs-keyword">map</span>[<span class="hljs-typename">string</span>]<span class="hljs-typename">int</span>{})) <span class="hljs-comment">// &quot;true&quot;</span>
</code></pre>
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<p>Equal&#x51FD;&#x6578;&#x751A;&#x81F3;&#x53EF;&#x4EE5;&#x8655;&#x7406;&#x985E;&#x4F3C;12.3&#x7AE0;&#x4E2D;&#x5C0E;&#x81F4;Display&#x9677;&#x5165;&#x9677;&#x5165;&#x6B7B;&#x5FAA;&#x74B0;&#x7684;&#x5E36;&#x6709;&#x74B0;&#x7684;&#x6578;&#x64DA;&#x3002;</p>
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<pre><code class="lang-Go"><span class="hljs-comment">// Circular linked lists a -&gt; b -&gt; a and c -&gt; c.</span>
<span class="hljs-keyword">type</span> link <span class="hljs-keyword">struct</span> {
value <span class="hljs-typename">string</span>
tail *link
}
a, b, c := &amp;link{value: <span class="hljs-string">&quot;a&quot;</span>}, &amp;link{value: <span class="hljs-string">&quot;b&quot;</span>}, &amp;link{value: <span class="hljs-string">&quot;c&quot;</span>}
a.tail, b.tail, c.tail = b, a, c
fmt.Println(Equal(a, a)) <span class="hljs-comment">// &quot;true&quot;</span>
fmt.Println(Equal(b, b)) <span class="hljs-comment">// &quot;true&quot;</span>
fmt.Println(Equal(c, c)) <span class="hljs-comment">// &quot;true&quot;</span>
fmt.Println(Equal(a, b)) <span class="hljs-comment">// &quot;false&quot;</span>
fmt.Println(Equal(a, c)) <span class="hljs-comment">// &quot;false&quot;</span>
</code></pre>
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<p><strong>&#x7DF4;&#x7FD2; 13.1&#xFF1A;</strong> &#x5B9A;&#x7FA9;&#x4E00;&#x500B;&#x6DF1;&#x6BD4;&#x8F03;&#x51FD;&#x6578;&#xFF0C;&#x5C0D;&#x65BC;&#x5341;&#x5104;&#x4EE5;&#x5167;&#x7684;&#x6578;&#x5B57;&#x6BD4;&#x8F03;&#xFF0C;&#x5FFD;&#x7565;&#x985E;&#x578B;&#x5DEE;&#x7570;&#x3002;</p>
<p><strong>&#x7DF4;&#x7FD2; 13.2&#xFF1A;</strong> &#x7DE8;&#x5BEB;&#x4E00;&#x500B;&#x51FD;&#x6578;&#xFF0C;&#x5831;&#x544A;&#x5176;&#x53C3;&#x6578;&#x662F;&#x5426;&#x5FAA;&#x74B0;&#x6578;&#x64DA;&#x7D50;&#x69CB;&#x3002;</p>
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