Episode #155: Matching Digits

Today's episode delves into some advanced regular expression features, including "lookahead" and "lookbehind".
Notes for further exploration:

The book "Programming Ruby 1.9 and 2.0"
rubular.com
Talks from Nell Shamrell. There are also slides.
Nell's blog series on regular expressions in Ruby

(Clip from "Beneath the Surface: Regular Expressions in Ruby", CC by Nell Shamrell. Recorded by Confreaks at Lone Star Ruby Conference 2013)