| author | Christian Urban <christian.urban@kcl.ac.uk> |
| Sat, 29 Aug 2020 16:05:59 +0100 | |
| changeset 342 | 3779dd003077 |
| parent 300 | be9900ba65ff |
| permissions | -rw-r--r-- |
| 300 | 1 |
import CW9c._ |
| 221 | 2 |
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assert(nullable(ZERO) == false) |
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assert(nullable(ONE) == true) |
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assert(nullable(CHAR('a')) == false)
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assert(nullable(ZERO | ONE) == true) |
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assert(nullable(ZERO | CHAR('a')) == false)
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assert(nullable(ONE ~ ONE) == true) |
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assert(nullable(ONE ~ CHAR('a')) == false)
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assert(nullable(STAR(ZERO)) == true) |
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