From: Brian Candler <b.candler@...>
Date: 2010-08-12T17:00:06+09:00
Subject: Re: Can't change the value of self - II

Ralph Shnelvar wrote:
> Could you expand on this with an example, please?

[Just to show that delegation is nothing magic, and you don't need to 
use the Delegator class]

class MyCounter
  def initialize(n=0)
    @n = n
  end
  def inc!
    @n += 1
  end
  def to_int
    @n
  end
  def to_s
    @n.to_s
  end
end

c = MyCounter.new
c.inc!
c.inc!
puts "c is #{c}"

Some more work is required to make c duck-type like an Integer though.
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