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📄 匈牙利命名规范 丁丁历险记.htm

📁 C语言编程的变量命名法
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lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">他的思想是根据每个标识符所代表的含义给它一个前缀</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">微软后来采用了这个思想</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">给每个标识符一个前缀以说明它的数据类型</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因此</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">整型变量的前缀是</SPAN><SPAN 
lang=EN-US>n,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">长整型变量是</SPAN><SPAN 
lang=EN-US>nl,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">字符型数组变量是</SPAN><SPAN 
lang=EN-US>ca,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以及字符串</SPAN><SPAN 
lang=EN-US>(</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以空类型结尾的字符数组</SPAN><SPAN 
lang=EN-US>)</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以</SPAN><SPAN 
lang=EN-US>sz</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为前缀</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这些名字可能会非常古怪</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">比如说</SPAN><SPAN 
lang=EN-US>:lpszFoo</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">表示</SPAN><SPAN 
lang=EN-US>"Foo"</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是一个指向以空字符为结尾的字符串的长整型指针</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT 
face=幼圆>&nbsp;<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法的优点是使人能够通过变量的名字来辨别变量的类型</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而不比去查找它的定义</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">遗憾的是</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法不仅使变量名字非常绕口</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而且使改变变量类型的工作变得十分艰巨</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><SPAN 
lang=EN-US>Windows3.1</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">整型变量为</SPAN><SPAN 
lang=EN-US>16</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为宽</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果我们在开始时采用了一个整型变量</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但是在通过</SPAN><SPAN 
lang=EN-US>30---40</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个函数的计算之后</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发现采用整型变量宽度不够</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这时我们不仅要改变这个变量的类型</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而且要改变这个变量在这</SPAN><SPAN 
lang=EN-US>30--40</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个函数中的名字</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT 
face=幼圆>&nbsp;<o:p></o:p></FONT></SPAN></P>
<DIV 
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; PADDING-BOTTOM: 3pt; BORDER-LEFT: medium none; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.75pt solid">
<P class=MsoNormal 
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; MARGIN: 0cm 0cm 0pt; BORDER-LEFT: medium none; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none; mso-border-bottom-alt: solid windowtext .75pt; mso-padding-alt: 0cm 0cm 3.0pt 0cm"><FONT 
face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为不切实际</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">除了一些顽固的</SPAN><SPAN 
lang=EN-US>Windows</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程序员外已经没有人再使用</SPAN><SPAN 
lang=EN-US>"</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">匈牙利表示法</SPAN><SPAN 
lang=EN-US>"</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">了</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">毫无疑问</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在某种场合它依然存在</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但大部分人现在已经抛弃它了</SPAN><SPAN 
lang=EN-US>.</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一般而言</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">输入前缀是一种糟糕的想法</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为它把变量于其类型紧紧地绑在了一起</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P></DIV>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对于</SPAN><SPAN 
lang=EN-US>30</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行以下的函数，匈牙利方法一般有优势。</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
face=幼圆>尤其是对界面编程，有优势。</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但对于有强烈的算法要求、尤其是有很多抽象类型的</SPAN><SPAN 
lang=EN-US>C++</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程序，匈牙利方法简直是一个灾难。</SPAN></FONT></P>
<DIV 
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; PADDING-BOTTOM: 1pt; BORDER-LEFT: medium none; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.75pt solid">
<P class=MsoNormal 
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; MARGIN: 0cm 0cm 0pt; BORDER-LEFT: medium none; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none; mso-border-bottom-alt: solid windowtext .75pt; mso-padding-alt: 0cm 0cm 1.0pt 0cm"><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
face=幼圆>看你用在什么地方。</FONT></SPAN></P></DIV>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">现在有了很好的</SPAN><SPAN 
lang=EN-US>IDE</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">工具</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如</SPAN><SPAN 
lang=EN-US>:VC,SourceInsight</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">选中变量</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">会自动提示告诉你它的声明和定义</SPAN><SPAN 
lang=EN-US>,</SPAN><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这样</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">匈牙利命名法就没有很大的必要了</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">无非就是为了程序可读性较好</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT face=幼圆><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">实际上良好的代码书写习惯比强制使用匈牙利命名法更重要</SPAN><SPAN 
lang=EN-US>.</SPAN></FONT></P>
<DIV 
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: windowtext 0.75pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 1pt; BORDER-LEFT: medium none; PADDING-TOP: 1pt; BORDER-BOTTOM: windowtext 0.75pt solid">
<P class=MsoNormal 
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; MARGIN: 0cm 0cm 0pt; BORDER-LEFT: medium none; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none; mso-border-bottom-alt: solid windowtext .75pt; mso-padding-alt: 1.0pt 0cm 1.0pt 0cm; mso-border-top-alt: solid windowtext .75pt"><SPAN 
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT
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