diff -r 940b6c68102a -r 72688efdf17c testing4/re_test1.scala
--- a/testing4/re_test1.scala	Thu Oct 31 11:33:02 2019 +0000
+++ b/testing4/re_test1.scala	Thu Oct 31 12:01:56 2019 +0000
@@ -1,6 +1,5 @@
-
+import CW9c._
 
- 
 assert(nullable(ZERO) == false)
 assert(nullable(ONE) == true)
 assert(nullable(CHAR('a')) == false)
@@ -10,15 +9,3 @@
 assert(nullable(ONE ~ CHAR('a')) == false)
 assert(nullable(STAR(ZERO)) == true)
 
-
-
-//import scala.concurrent._
-//import scala.concurrent.duration._
-//import ExecutionContext.Implicits.global
-//import scala.language.postfixOps 
-//import scala.language.reflectiveCalls
-
-//lazy val f = Future {
-
-//}
-//Await.result(f,30 second)