progs/app6.scala
changeset 435 e08431a78f66
parent 422 5deefcc8cffa
child 565 2be8c4c77418
equal deleted inserted replaced
434:8664ff87cd77 435:e08431a78f66
    20   case r => r
    20   case r => r
    21 }
    21 }
    22 
    22 
    23 def ders(s: List[Char], r: Rexp) : Rexp = s match {
    23 def ders(s: List[Char], r: Rexp) : Rexp = s match {
    24   case Nil => r
    24   case Nil => r
    25   case c::s => ders(s, simp(der(c, r))) (*@\label{simpline}@*) 
    25   case c::s => ders(s, simp(der(c, r)))             /*@\label{simpline}@*/ 
    26 }
    26 }
    27 
    27