From: Gavin Kistner <gavin@...>
Date: 2005-05-19T12:01:14+09:00
Subject: Re: Noobie ... Simple Inheriting from Hash Question ..

--Apple-Mail-3-725512346
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
	charset=US-ASCII;
	delsp=yes;
	format=flowed

On May 18, 2005, at 7:01 PM, Neville Burnell wrote:
>> Another option that hasn't been mentioned yet is to use delegation.
>> You can have a wrapper around a hash that contains all your  
>> additional
>> methods and references a Hash instance.
>
> Could you elaborate with code pls?

class MyHash
     def initialize
         @hash = {}
     end

     # Do something special to the hash
     def square_all
         @hash.each{ |k,v| @hash[k] = v*v }
     end

     # Pass any method I don't understand on to the hash
     def method_missing(meth, *args, &block)
         @hash.send(meth, *args, &block)
     end
end

--Apple-Mail-3-725512346--