From: Li Chen <chen_li3@...>
Date: 2008-01-11T06:02:58+09:00
Subject: Re: string extraction

yermej wrote:
> On Jan 10, 2:38?pm, Li Chen <chen_...@yahoo.com> wrote:
>> --
>> Posted viahttp://www.ruby-forum.com/.
> 
> new_string = old_string.gsub(/[^A-Z]/, '')
> 
> That substitutes '' (empty string) for any character that is not (^) a
> capital letter (A-Z).
> 
> To do the same thing in place: old_string.gsub!(/^A-Z]/, '')

Hi yermej,

One more question: How do I change all the As into T and all the Ts into 
A in the old sttring?

old_s="AAATTAA"
new_s="TTTAATT"

thanks,

Li

-- 
Posted via http://www.ruby-forum.com/.