From: gwtmp01@...
Date: 2006-06-21T21:29:27+09:00
Subject: Re: Achieve pure object oriented design in Ruby


On Jun 20, 2006, at 6:02 PM, Robert Dober wrote:
> The real problem is  requirement 2) of the OP,  instanciation of  
> class B
> shall only be possible in class A, e.g. in an instance of A, I do  
> not think
> this is possible, but I would not bet on it (not much).

Why not just make B an anonymous class:

class A
   def initialize
     @bclass = Class.new do
       # class definition here
     end
     @bs = []
   end

   def another_b_please
      @bs << @bclass.new
      @bs.last
   end
end


Gary Wright