Klass Module

cheating.rb

module Klass
  def self.new *args, &block
    object = Class.allocate
    object.send :initialize, *args, &block
    object
  end
end

Cat = Klass.new do
  attr_reader :name, :age

  def initialize name, age
    @name, @age = name, age
  end
end

cat = Cat.new 'Mr. Fluffles', 9
#=> #<Cat:0x007ffb7da1bca8 @name="Mr. Fluffles", @age=9>

cat.name
#=> "Mr. Fluffles"