文档介绍：正则表达式大全(regular expression) 关键字: 正则表达式, Regular Expression 前言正则表达式是烦琐的,但是强大的,学会之后的应用会让你除了提高效率外, 会给你带来绝对的成就感。只要认真去阅读这些资料,加上应用的时候进行一定的参考,掌握正则表达式不是问题。索引 1. 引子............................................................................................................................... .....................3 2. 正则表达式的历史............................................................................................................................3 3 . 正则表达式定义............................................................................................................................... .......... 3 普通字符............................................................................................................................... ............4 非打印字符............................................................................................................................... ........4 特殊字符............................................................................................................................... ............4 限定符............................................................................................................................... ................5 定位符............................................................................................................................... ................6 选择............................................................................................................................... ....................6 后向引用............................................................................................................................... ............6 4. 各种操作符的运算优先级........................................................................................................................... 6 5. 全部符号解释............................................................................................................................... ................ 6 6. 部分例子....................................