progs/app02.scala
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Sun, 21 Aug 2016 00:37:27 +0100
changeset 407 4b454a6d1814
parent 356 d9c784c71305
child 520 2849c305b12d
permissions -rw-r--r--
updated

abstract class Val
case object Empty extends Val
case class Chr(c: Char) extends Val
case class Seq(v1: Val, v2: Val) extends Val
case class Left(v: Val) extends Val
case class Right(v: Val) extends Val
case class Stars(vs: List[Val]) extends Val