From: "Wolfgang Nádasi-Donner" <ed.odanow@...>
Date: 2008-01-17T07:19:25+09:00
Subject: Re: regular expression

Andrew Stewart wrote:
> You can see there's a lot of repetition in the regular expression so
> the next step would probably be to DRY it.

O.K. - it really increases the readability ;-)

re = Regexp.compile((v=p='')+"^#{p="[^#{v='aeiou'}]*"}"+v.split('').
     join("[^#{v}]*")+p+'$')
p re # => 
/^[^aeiou]*a[^aeiou]*e[^aeiou]*i[^aeiou]*o[^aeiou]*u[^aeiou]*$/

Wolfgang Nádasi-Donner
-- 
Posted via http://www.ruby-forum.com/.