main_testing3/re_test1.scala
author Christian Urban <christian.urban@kcl.ac.uk>
Mon, 18 Jan 2021 22:12:39 +0000
changeset 386 69f36c98808b
parent 347 0b727d1a8184
child 403 312c9eb39ad8
permissions -rw-r--r--
added marking

import CW8c._

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)