在StackOverflow的播客之一（一个人在那里讨论了数据生成测试数据块 - 无论是的＃11 或＃12 ），杰夫提到类似反常规EX pressions，这是完全用于这个目的：给定一个正则表达式，产生一个字符串，最终将比赛表示正则表达式

In one of the StackOverflow Podcasts (the one where guys were discussing data generation for testing DBs -- either #11 or #12), Jeff mentioned something like "reverse regular expressions", which are used exactly for that purpose: given a regex, produce a string which will eventually match said regex.

什么是正确的术语，这整个概念？这是一个众所周知的概念？

What is the correct term for this whole concept? Is this a well-known concept?

推荐答案

在Perl模块字符串::随机（在CPAN）来实现的。注意到经常EX pressions的一个子集，并通过它做了随机游走。

The Perl module String::Random (in the CPAN) does this. Takes a subset of regular expressions, and does a random walk through it.