jordanlewis · January 28, 2012 03:55
diff --git a/PDFS_catenate.scala b/PDFS_catenate.scala
 def catenate[A](xs: List[A], ys: List[A]) : List[A] = xs match {
  case Nil => ys
  case x::xs => x :: (catenate(xs, ys))
 }
	def catenate[A](xs: List[A], ys: List[A]) : List[A] = xs match {
	case Nil => ys
	case x::xs => x :: (catenate(xs, ys))
	}