finalize.rb

  1 module HasFinalize
  2   def self.included(base)
  3     base.class_eval do
  4       private
  5 
  6       def finalize(&block)
  7         ObjectSpace.define_finalizer(self, &block)
  8       end
  9     end
 10   end
 11 end
 12 
 13 class T
 14   include HasFinalize
 15 
 16   def initialize
 17     x = 100
 18     finalize { puts x }
 19   end
 20 end
 21 
 22 T.new
 23 GC.start
 24 
~