Multiple Inheritance in Ruby?

Question

I thought that Ruby only allowed single inheritance besides mixin. However, when I have class Square that inherits class Thing, Thing in t

Answer 1

No, multi inheritance means one class have more than one parent class. For example in ruby you can have that behavior with modules like:

class Thing
  include MathFunctions
  include Taggable
  include Persistence
end

So in this example Thing class would have some methods from MathFunctions module, Taggable and Persistence, that wouldn't be possible using simple class inheritance.