From: Tim Bates <tim@...>
Date: 2004-11-16T08:13:50+09:00
Subject: Re: "The Ruby Way" and adding methods to base classes in libraries

Joel VanderWerf wrote:
>> So, what's the right way to handle this situation?
> 
> 
> You could define this method in a module and use Object#extend to give 
> that functionality to particular arrays.

The other way to deal with this would be to create a new class that 
inherits from Array:

class SuperSetArray < Array     # or some other, better name
   def first_superset_of(*arrays)
     arrays.detect do |array|
         self.detect do |element|
             not array.include?(element) ? false : true
         end
     end
   end
end

Tim.

-- 
Tim Bates
tim@bates.id.au