From: "Michael W. Ryder" <_mwryder@...>
Date: 2007-06-12T16:25:08+09:00
Subject: Re: extracting numbers from a string

Matt Jones wrote:
> I have filenames from various digital cameras:  DSC_1234.jpg,
> CRW1234.jpg, etc.  What I really want is the numeric portion of that
> filename.  How would I extract just that portion?
> 
> 
> I expect it to involve the regex /\d+/, but I'm unclear how to extract a
> portion of a string matching a regex.
> 
> Thank you
> 
a = "DSC_1234.jpg"
b = a.gsub(/[^[:digit:]]/, '')