From: Sebastian Hungerecker <sepp2k@...>
Date: 2008-01-11T05:51:35+09:00
Subject: Re: string extraction

Li Chen wrote:
> What is the Ruby way to extract a string like this?
>
> old_string="5'-AAAAAAAA    CCCCCCCC  TTT   GGGGG    GGGG-3'"
> new_string="AAAAAAAACCCCCCCCTTTGGGGGGGGG"

new_string = old_string.gsub(/[^ACTG]/i,"")

This removes anything that is not an A, C, T or G (case insensitively. If you 
want lower case chars acgt to be removed, too, remove the i from the regex).


HTH,
Sebastian
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