100162732.htm

来自「C#高级编程(第三版),顶死你们。。 。up」· HTM 代码 · 共 298 行 · 第 1/5 页

            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">指针</span><span lang="EN-US"> </span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Self-describing Types</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">为垃圾收集器提供有用信息的数据类型</span><span lang="EN-US">(</span><span style="FONT-FAMILY: 宋体">参见下一节</span><span lang="EN-US">)</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Arrays</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">包含对象数组的类型</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Class Types</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">可自我描述的类型，但不是数组</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Delegates</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">用于把引用包含在方法中的类型</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">User-definedReference Types</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">在源代码中定义，且保存为引用类型的数据类型。在</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">中，它表示类</span></p>
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            <p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US">Boxed Value Types</span></p>
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            <p class="a4" style="MARGIN-LEFT: 0cm"><span style="FONT-FAMILY: 宋体">值类型，临时打包放在一个引用中，以便于存储在堆中</span></p>
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<p class="MsoNormal"><span lang="EN-US">&nbsp;</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">这里没有列出内置的值类型，因为将在第</span><span lang="EN-US">2</span><span style="FONT-FAMILY: 宋体">章详细介绍它们。在</span><span lang="EN-US">C#</span><span style="FONT-FAMILY: 宋体">中，编译器识别的每个预定义类型都映射为一个</span><span lang="EN-US">IL</span><span style="FONT-FAMILY: 宋体">内置类型。这与</span><span lang="EN-US">VB.NET</span><span style="FONT-FAMILY: 宋体">是一样的。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">公共语言规范</span><span lang="EN-US">(CLS)</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">，</span><span lang="EN-US">CLS)</span><span style="FONT-FAMILY: 宋体">和通用类型系统一起确保语言的互操作性。</span><span lang="EN-US">CLS</span><span style="FONT-FAMILY: 宋体">是一个最低标准集，所有面向</span><span lang="EN-US">.NET</span><span style="FONT-FAMILY: 宋体">的编译器都必须支持它。因为</span><span lang="EN-US">IL</span><span style="FONT-FAMILY: 宋体">是一种内涵非常丰富的语言，大多数编译器的编写人员有可能把给定编译器的功能限制为只支持</span><span lang="EN-US">IL</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">CLS</span><span style="FONT-FAMILY: 宋体">提供的一部分特性。只要编译器支持已在</span><span lang="EN-US">CLS</span><span style="FONT-FAMILY: 宋体">中定义的内容，这就是很不错的。</span></p>
<p class="a3" style="MARGIN-TOP: 8.15pt; TEXT-INDENT: 21.45pt"><span style="FONT-FAMILY: 黑体">提示：</span></p>
<p class="a1" style="MARGIN-BOTTOM: 8.15pt; TEXT-INDENT: 21.45pt"><span style="FONT-FAMILY: 楷体_GB2312">编写的非</span><span lang="EN-US">CLS</span><span style="FONT-FAMILY: 楷体_GB2312">兼容代码应该是完全可以接受的，只是编写了这种代码后，就不能保证编译好的</span><span lang="EN-US">IL</span><span style="FONT-FAMILY: 楷体_GB2312">代码是完全支持语言的互操作性。</span></p>