marking4/re_test1.scala
author Christian Urban <urbanc@in.tum.de>
Thu, 31 Oct 2019 09:20:43 +0000
changeset 294 7a945c3b86c7
parent 288 65731df141a5
permissions -rw-r--r--
updated

import CW9c._

assert(nullable(ZERO) == false)
assert(nullable(ONE) == true)
assert(nullable(CHAR('a')) == false)
assert(nullable(ZERO | ONE) == true)
assert(nullable(ZERO | CHAR('a')) == false)
assert(nullable(ONE ~  ONE) == true)
assert(nullable(ONE ~ CHAR('a')) == false)
assert(nullable(STAR(ZERO)) == true)