| author | Christian Urban <urbanc@in.tum.de> |
| Thu, 06 Dec 2018 18:37:17 +0000 | |
| changeset 233 | 38ea26f227af |
| parent 227 | b5f3e814a710 |
| permissions | -rw-r--r-- |
import CW8a._ assert(der('a', ZERO | ONE) == (ZERO | ZERO)) assert(der('a', (CHAR('a') | ONE) ~ CHAR('a')) == ALT((ONE | ZERO) ~ CHAR('a'), ONE)) assert(der('a', (CHAR('a') | CHAR('a')) ~ CHAR('a')) == (ONE | ONE) ~ CHAR('a')) assert(der('a', STAR(CHAR('a'))) == (ONE ~ STAR(CHAR('a')))) assert(der('b', STAR(CHAR('a'))) == (ZERO ~ STAR(CHAR('a'))))