From: Ammar Ali <ammarabuali@...>
Date: 2012-04-01T05:09:06+09:00
Subject: Re: Ruby regex match hex string

On Sat, Mar 31, 2012 at 9:58 PM, Niels Steves <lists@ruby-forum.com> wrote:
> Hey guys,
>
> I was wondering if someone could help me out.
> I'm trying to validate a string with a regex but can't get it working.
> I need to validate a string containing hex pairs divided by a comma,
> like this
>
> 11,1,aa,a,1b,3b,55,b6
>
> I got this regex:
>
> /\A([0-9a-fA-F]{1,2},{1})*([0-9a-fA-F]{1,2}){1}\Z/

You can use \h to match a hexadecimal digit as well, which match both
lower and upper case a-f.

  /\A(\h{1,2},)*\h{1,2}\z/

Regards,
Ammar