progs/app7.scala
author cu
Wed, 11 Oct 2017 13:48:53 +0100
changeset 517 edab48a5b37e
parent 295 19f23c4c2167
permissions -rw-r--r--
updated

abstract class Parser[I, T] {
  def parse(ts: I): Set[(T, I)]

  def parse_all(ts: I) : Set[T] =
    for ((head, tail) <- parse(ts); 
         if (tail.isEmpty)) yield head
}