| p;
Control N字符，例如回车（Ctrl-M）就是\cM
40
\A
字符串的开始（像^但是不依赖于多行选项）
41
\Z
字符串的结尾或者\n之前的字符串结尾（忽略多行）
\z
字符串结尾（忽略多行）
42
\G
当前搜索的开始阶段
43
\p{name}
命名为name的Unicode类中的任何字符，例如\p{IsGreek}
(?>exp)
贪婪子表达式，也被称为非回溯子表达式。它只匹配一次然后就不再参与回溯。
44
(?<x>-<y>exp) or (?-<y>exp)
Balancing group. This is complicated but powerful. It allows named capture groups to be manipulated on a push down/pop up stack and can be used, for example, to search for matching parentheses, which is otherwise not possible with regular expressions. See the example in the project file.
45
(?im-nsx:exp)
正则表达式选项为子表达式exp
46
(?im-nsx)
Change the regular expression options for the rest of the enclosing group
(?(exp)yes|no)
The subexpression exp is treated as a zero-width positive lookahead. If it matches at this point, the subexpression yes becomes the next match, otherwise no is used.
(?(exp)yes)
Same as above but with an empty no expression
(?(name)yes|no)
This is the same syntax as the preceding case. If name is a valid group name, the yes expression is matched if the named group had a successful match, otherwise the no expression is matched.
47
(?(name)yes)
Same as above but with an empty no expression
表6 我们遗漏的东西。左端的列显示了项目文件中说明这个结构的例子的序号
结论
我们已经给出了很多例子来说明.NET正则表达式的关键特性，强调使用工具（如Expresso）来测试，实践，然后是用例子来学习。如果你想要深入的研究，网上也有很多在线资源会帮助你更深入的学习。你可以从访问Ultrapico网站开始。如果你想读一本相关书籍，我建议Jeffrey Friedl写的最新版的《Mastering Regular Expressions》。
Code Project中还有很多不错的文章，其中包含下面的教程：
·An Introduction to Regular Expressions by Uwe Keim
·Microsoft Visual C# .NET Developer's Cookbook: Cha 上一页 [1] [2] [3] [4] [5] [6] [7] [8] 下一页 |
