Cross product in Scala

Question

I want to have a binary operator cross (cross-product/cartesian product) that operates with traversables in Scala:

val x = Seq(1, 2)
val y = Lis         


        

Answer 1

Alternative for cats users:

sequence on List[List[A]] creates cross product:

import cats.implicits._

val xs = List(1, 2)
val ys = List("hello", "world", "bye")

List(xs, ys).sequence 
//List(List(1, hello), List(1, world), List(1, bye), List(2, hello), List(2, world), List(2, bye))