marking4/re_test1.scala
author Christian Urban <christian.urban@kcl.ac.uk>
Wed, 06 Mar 2024 18:20:25 +0000
changeset 484 c4561fc667b7
parent 288 65731df141a5
permissions -rw-r--r--
test

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)