From: "José Ignacio" <joseignacio.fernandez@...>
Date: 2008-09-01T22:39:22+09:00
Subject: Undo Object.extend

Hi all:

I'm trying to change the behaviour of a specific instance at runtime.
I'm using modules in the following way:

module NormalBehaviour
  def talk
    puts 'Hi'
  end
end

class A
  include NormalBehaviour
end

module EnhancedBehaviour
  def talk
    super
    puts 'Goodbye'
  end
end

a = A.new
a.talk
# Output: Hi

a.extend EnhancedBehaviour
a.talk
# Output: Hi
#         Goodbye

I would like to be able to make variable "a" to its original state,
i.e., by 'deincluding' EnhancedBehaviour. Something like this:
a.deinclude EnhancedBehaviour
a.talk
# Output: Hi

Is there a way to do this?
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