progs/app7.scala
author cu
Thu, 28 Sep 2017 19:07:37 +0100
changeset 511 1af5ec39d006
parent 295 19f23c4c2167
permissions -rw-r--r--
c

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
}