From: Avdi Grimm <avdi@...>
Date: 2008-11-03T06:56:48+09:00
Subject: Re: check if valid hexadecimal code?

On Sun, Nov 2, 2008 at 4:30 PM, Chealsea S. <youngliars@gmail.com> wrote:
> How would you check if a string is a valid hexadecimal code?

irb(main):007:0> hex_pattern = /^[[:xdigit:]]+$/
=> /^[[:xdigit:]]+$/
irb(main):008:0> hex_pattern === "0123456789ABCDEF"
=> true
irb(main):009:0> hex_pattern === "Chunky Bacon"
=> false


-- 
Avdi

Home: http://avdi.org
Developer Blog: http://avdi.org/devblog/
Twitter: http://twitter.com/avdi
Journal: http://avdi.livejournal.com