RegExp

Finally, the regex man page, available on many UNIX systems, provides information on building POSIX regexps.

最后，很多UNIX系统上提供的regex手册页提供了有关构建POSIX regexp的信息。

Instead of lines of code with calls to String methods, the new approach implies delegating the core of the parser logic and replacing it with a regexp library.

新的方法将取消编写用来调用String方法的多行代码，它意味着将解析器逻辑的核心委托出去，并替换为regexp库。

The concept of regular expressions ( regexps) a notation for describing a pattern that matches a set of strings is common across many programs and languages.

正则表达式（regular expression，regexp）是用于描述字符串集的匹配模式的概念，在很多程序和语言中都是通用的。