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正则表达式匹配原理

by CFC4N CHEN on Sep 26, 2011

  • 1,841 views

你还记得大学时候的课程编译原理中提到的 NFA\DFA 吗?还有印象吗?你知道PHP编译器扫描你写的PHP代码字符串的时候,是如何区分哪个是变量,哪个是常...

你还记得大学时候的课程编译原理中提到的 NFA\DFA 吗?还有印象吗?你知道PHP编译器扫描你写的PHP代码字符串的时候,是如何区分哪个是变量,哪个是常量的吗?你知道SQL语法分析器是如何判断你的WHERE条件中出现的SELECT\FROM\ WHERE等关键字是字符串,而不是子查询等关键字的?
你知道.ini配置文件跟xml配置文件对程序来说,是如何扫描解析的吗?他们一样吗?

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正则表达式匹配原理 — Presentation Transcript