| changeset 940 | 1c1fbf45a03c |
| parent 928 | 717ecab7b87a |
| child 960 | 791f4d9f53e1 |
| 939:fb6ffb9b7304 | 940:1c1fbf45a03c |
|---|---|
54 nullable(ders(s.toList, r)) |
54 nullable(ders(s.toList, r)) |
55 |
55 |
56 |
56 |
57 // some examples from the homework |
57 // some examples from the homework |
58 |
58 |
59 val r = SEQ(CHAR('b'), CHAR('c')) |
59 val r = SEQ(CHAR('a'), CHAR('c')) |
60 matcher(r, "ac") |
60 matcher(r, "ac") |
61 |
61 |
62 val r1 = STAR(ALT(SEQ(CHAR('a'), CHAR('b')), CHAR('b'))) |
62 val r1 = STAR(ALT(SEQ(CHAR('a'), CHAR('b')), CHAR('b'))) |
63 der('a', r) |
63 der('a', r) |
64 der('b', r) |
64 der('b', r) |