From: Simon Strandgaard <neoneye@...>
Date: 2004-09-23T04:40:28+09:00
Subject: Re: Regexp Arity

On Wednesday 22 September 2004 20:26, trans.  (T. Onoma) wrote:
> Just ran into a need to know how many parenthetical groupings a Regexp has.
> Would #arity for Regexp be a good idea?


hmm...

irb(main):006:0> parser = Parser.new('a(b(?:c(x)c)d)')
[snip]
irb(main):007:0> class << parser
irb(main):008:1> attr_reader :number_of_captures
irb(main):009:1> end
=> nil
irb(main):010:0> parser.number_of_captures
=> 2
irb(main):011:0>


why have I never thought of this?

--
Simon Strandgaard