From: "Haase, Konstantin" <Konstantin.Haase@...>
Date: 2011-04-29T22:02:20+09:00
Subject: [ruby-core:35948] Re: [Ruby 1.9 - Feature #4632][Open] Regexp instance method | for creating Regexp.unions

I like it for Regexp, but a string method would violate the POLS, imho.

Konstantin

On Apr 29, 2011, at 14:59 , Jan Lelis wrote:

> 
> Issue #4632 has been reported by Jan Lelis.
> 
> ----------------------------------------
> Feature #4632: Regexp instance method | for creating Regexp.unions 
> http://redmine.ruby-lang.org/issues/4632
> 
> Author: Jan Lelis
> Status: Open
> Priority: Normal
> Assignee: 
> Category: 
> Target version: 
> 
> 
> Regexp.union is a great feature, but it is rarely used. I can imagine, the following syntax would be quite popular:
> 
> For example:
>  /Ruby\d/ | /test/i | "cheat" #=> Regexp.union( Regexp.union( /Ruby\d/, /test/i ), "cheat" )
> 
> It would also be cool as String method, so one can do:
>  "jruby" | "rbx" #=> /jruby|rbx/
> 
> Example implementation:
>  class Regexp
>    def |(arg)
>      Regexp.union self, arg.is_a?(Regexp) ? arg : arg.to_s
>    end
>  end
> 
>  class String
>    def |(arg)
>      Regexp.union self, arg.is_a?(Regexp) ? arg : arg.to_s
>    end
>  end
> 
> 
> -- 
> http://redmine.ruby-lang.org
>