| author | Christian Urban <urbanc@in.tum.de> |
| Fri, 07 Dec 2018 08:54:34 +0000 | |
| changeset 241 | c650a91db720 |
| 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'))))