--- a/progs/re1.scala	Mon Oct 24 14:46:47 2016 +0100
+++ b/progs/re1.scala	Sat Oct 29 21:45:44 2016 +0100
@@ -62,9 +62,9 @@
 val EVIL2 = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
 
 //for measuring time
-def time_needed[T](i: Int, code: => T) = {
+def time_needed[T](i: Int, code => T) = {
   val start = System.nanoTime()
-  for (j <- 1 to i) code
+  for (j <- 1 to i) code()
   val end = System.nanoTime()
   (end - start)/(i * 1.0e9)
 }