How do I make a class whose constructor looks like the constructor of a built-in class?

Question

Complex is a built-in class. To make a Complex object, I write:

Complex(10, 5)

But if I create my own class

Answer 1

class Dog
  def initialize(name)
    @name = name
  end

  def greet
    puts 'hello'
  end
end


def Dog(x)
  Dog.new(x)  #Create a new instance of the Dog class and return it.
end


d = Dog("Rover")
d.greet

--output:--
hello