摘要: Q-->question A-->answer M-->mention The Chapter 18th Nullable Type ValueM:其为值类型的一种可空转换. M:语法形式=>Nullable,其等价于值类型?,其有一操作符??连接用!其为二元的,若左侧不为空返回左 ,否则为右. Q:可操作性?A:1.NULL与任何数及运算符进行操作,... 阅读全文
posted @ 2007-06-25 13:13 晓木 阅读(103) 评论(0) 推荐(0)
摘要: Let's call it a day.. Someting's come up.. Keep that in mind.. 阅读全文
posted @ 2007-06-25 13:12 晓木 阅读(184) 评论(0) 推荐(0)