Lets you test multiple ideas in a single experiment instead of having to perform many individual tests over a long period
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Медведев вышел в финал турнира в Дубае17:59，详情可参考服务器推荐
I wouldn't recommend this approach, since regexes are fidgety to write and worse to read (believe me, I've seen millions). They're easy to get wrong, and engines may differ in subtle but important ways. The fact that the top ten regexes contains at least one such subtle bug should suggest that regexes are, in fact, not a good tool for input validation.
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