1 

     2 

     3  

     4 assert(nullable(ZERO) == false)

     5 assert(nullable(ONE) == true)

     6 assert(nullable(CHAR('a')) == false)

     7 assert(nullable(ZERO | ONE) == true)

     8 assert(nullable(ZERO | CHAR('a')) == false)

     9 assert(nullable(ONE ~  ONE) == true)

    10 assert(nullable(ONE ~ CHAR('a')) == false)

    11 assert(nullable(STAR(ZERO)) == true)

    12 

    13 

    14 

    15 //import scala.concurrent._

    16 //import scala.concurrent.duration._

    17 //import ExecutionContext.Implicits.global

    18 //import scala.language.postfixOps 

    19 //import scala.language.reflectiveCalls

    20 

    21 //lazy val f = Future {

    22 

    23 //}

    24 //Await.result(f,30 second)