Ruby:如何使用memoization来装饰方法？

module Memoizable
  def memoize(method_name)
    original_method = instance_method(method_name)
    memoized_values = {}

    define_method(method_name) do |*args|
      if memoized_values.key?(args)
        memoized_values[args]
      else
        memoized_values[args] = original_method.bind(self).call(*args)
      end
    end
  end
end

class MyClass
  prepend Memoizable

  def initialize
    @counter = 0
  end

  def my_method
    @counter += 1
    puts "Method called #{@counter} times"
  end

  memoize :my_method
end

my_instance = MyClass.new
my_instance.my_method
my_instance.my_method
my_instance.my_method