-scala: comb-s

Product.scala

/**
  * @author Alexander Krasniansky
  */
object Product extends App {

  def cardinality(set: Set[_]) = set size
  
  // ================= Set Intersection =================

  val A = Set(1, 2, 3, 4, 5)
  val B = Set(6, 7, 8, 9, 10)

  val C = A intersect B

  println(cardinality(C))

  // ================= Cartesian Product =================

  val D = for {x <- A; y <- B} yield (x, y)

  println(D)
  println(cardinality(D))
  
}