gistfile1.txt

object Implicits {
  implicit def xyz[A](as:Stream[A]) = new {
    def takeThrough(p:A => Boolean) = tt(as)
    def tt[A](as:Stream[A], p:A => Boolean):Stream[A] = as match {
      case h #:: t => Stream.cons(h, if (p(h)) tt(t) else Stream.Empty)
      case e => e
    }
  }
}