debasishg

// for comprehension
scala> for {
     |   l <- List(2,5,10)
     |   m <- List(8,10,11)
     | } yield l * m
res17: List[Int] = List(16, 20, 22, 40, 50, 55, 80, 100, 110)

// map a pure function into applicatives
scala> List(8,10,11) <*> (List(2,5,10) map (((_: Int) * (_: Int)).curried))
res18: List[Int] = List(16, 20, 22, 40, 50, 55, 80, 100, 110)

retronym

class A
class A2 extends A
class B

trait M[X]

//
// Upper Type Bound
//
def upperTypeBound[AA <: A](x: AA): A = x