super keyword

call the method of superclass or module

ex:

class A

    def test(num)

           puts "A test #{num}"

    end

end

class B  <>

     def test( num)

           super

   puts "B test #{num}"

     end

end

b= B.new

b.test(2)

--->  A test 2

         B  test 2

super will pass the parameters to superclass or module

another usage:  call super will parameters to pass specific parameters