diff -r bc131735c940 -r 438459a8e48b testing3/re1b_test.scala
--- a/testing3/re1b_test.scala	Thu Nov 22 17:20:32 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,18 +0,0 @@
-
-//import scala.concurrent._
-//import scala.concurrent.duration._
-//import ExecutionContext.Implicits.global
-//import scala.language.postfixOps 
-//import scala.language.reflectiveCalls
-
-
-//lazy val f = Future {
-  import CW8a._
-
-  assert(der('a', ZERO | ONE) == (ZERO | ZERO))
-  assert(der('a', (CHAR('a') | ONE) ~ CHAR('a')) == ALT((ONE | ZERO) ~ CHAR('a'), ONE))
-  assert(der('a', STAR(CHAR('a'))) == (ONE ~ STAR(CHAR('a'))))
-  assert(der('b', STAR(CHAR('a'))) == (ZERO ~ STAR(CHAR('a'))))
-//}
-
-//Await.result(f, 120 second)