Ruby MultipleInitializers

multiple_initializers.rb

module MultipleInitializers
  def new_using(method, *args)
    instance = self.allocate
    raise 'implement me' unless instance.respond_to?(method.to_sym, true)

    instance.send(method.to_sym, *args)
    instance
  end
end

class Person
  extend MultipleInitializers

  def initialize_from_brain(brain)
    puts 'hehe'
  end

  private
  def initialize_from_organs(organs)
    puts 'xixi'
  end
end

brain = Object.new
person = Person.new_using(:initialize_from_brain, brain)

organs = Object.new
person = Person.new_using(:initialize_from_organs, organs)