From: James Edward Gray II <james@...>
Date: 2005-12-15T07:22:21+09:00
Subject: Re: regular expressions question

On Dec 14, 2005, at 4:03 PM, ako... wrote:

> thank you. the question is general.
>
> if i wanted to parse a list of letters separated by spaces and commas:
>
> 'a , b,c' =~ /^(?:(\w)\s*,\s*)*(\w)$/
>
> i need to get ['a','b'] in group 1 and ['c'] in group 2. yes, i know i
> can split, then massage the result some more and get the final result.
> is there a way to get to groups' captures after a regex match? like in
> microsoft's .net?

Perl-style variables:

 >> "abc" =~ /(.)(.)(.)/
=> 0
 >> p [$1, $2, $3]
["a", "b", "c"]
=> nil

Or object oriented:

 >> md = "abc".match(/(.)(.)(.)/)
=> #<MatchData:0x325dc8>
 >> p [md[1], md[2], md[3]]
["a", "b", "c"]
=> nil

Hope that helps.

James Edward Gray II