# redef is a super simple way to robustly override methods - providing the
# POLS method of referring to the previous method as (wait for it) super.
# it's really that simple
#
  require 'redef'

  class C
    def foo() 30 end

    p C.new.foo  #=> 30

    redef do 
      def foo() super + 2 end
    end

    p C.new.foo #=> 32

    redef do 
      def foo() super + 10 end
    end

    p C.new.foo #=> 42
  end