How do you do polymorphism in Ruby?

Question

In C#, I can do this:

class Program
{
    static void Main(string[] args)
    {
        List animals = new List();

        anima         


        

Answer 1

Building on the previous answer, is this how you might do it?

---

Second cut after clarification:

class Animal
    def MakeNoise
        raise NotImplementedError # I don't remember the exact error class
    end
    def Sleep
        puts self.class.to_s + " is sleeping."
    end
end

class Dog < Animal
    def MakeNoise
        return "Woof!"
    end
end

class Cat < Animal
    def MakeNoise
        return "Meow!"
    end
end

animals = [Dog.new, Cat.new]
animals.each {|a|
    puts a.MakeNoise
    a.Sleep
}

(I'll leave this as is, but "self.class.name" wins over ".to_s")