reincarnation.rb

# Reincarnation for classes

class Class
  def reincarnate
    buried = Object.__send__(:remove_const, self.name)
    Object.const_set(self.name, Class.new(buried))
  end
end

class Abc
  def foo
    "foo"
  end
end

Abc.reincarnate

class Abc
  def foo
    puts super
  end
end

Abc.new.foo


# Reincarnation for modules

class Module
  def reincarnate
    buried = Object.__send__(:remove_const, self.name)
    Object.const_set(self.name, Module.new).__send__(:include, buried)
  end
end

module Boo
  def bar
    "bar"
  end
end

Boo.reincarnate

module Boo
  def bar
    puts super
  end
end

class BooTest
  include Boo
end
 
BooTest.new.bar