package go_koans

type coolNumber int

func (cn coolNumber) multiplyByTwo() int {
  return int(cn) * 2
}

func aboutTypes() {
  i := coolNumber(4)
  assert(i == coolNumber(__int__)) // values can be converted between compatible types
  assert(i.multiplyByTwo() == __int__)    // you can add methods on any type you define
}