ruby include question

Question

class Foo
  def initialize(a)
    puts "Hello #{a}"
  end
end
module Bar
  def initialize(b)
    puts "#{b} World"
  end
end
class Sample < Foo
  include Bar
  def initialize(c)
    super
  end
end
Sample.new('qux') #=> qux World

Why output is not 'Hello qux' ? credit for code

Answer 1

When you include a module into a class, it acts as those you've inserted a new superclass in the class hierarchy, just between Sample and Foo. Calls to super() hunt through included modules before falling back to the real superclass (Foo).