From: Bertram Scharpf <lists@...>
Date: 2009-10-15T19:36:16+09:00
Subject: Re: matching against a zillion patterns

Hi,

Am Donnerstag, 15. Okt 2009, 15:24:35 +0900 schrieb George George:
> i have some script in which i would like to match a string against
> 'many' regular expressions patterns.
> 
> def group(string)
>  if string=~ /pattern1 |patter2|pattern3|pattern(N)/  #where N =>100
>    group =1
> else
>  ....
>  end
> end

How about this:

  p = [ /a/, /b/, /c/]
  p.find { |q| "x" =~ q }     #=> nil
  p.find { |q| "a" =~ q }     #=> /a/
  p.find { |q| "c" =~ q }     #=> /c/

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de