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Demonstrates the practical effect of goal-directed evaluation: chain of 12 nodes, semi-naive derives the full ancestor closure (78 = 12·13/2 tuples), while a magic-rooted query at node 0 returns only its 12 descendants. Concrete check that magic limits derivation to the query's transitive cone.
421 B
421 B
datalog scoreboard
209 / 209 passing (0 failure(s)).
| Suite | Passed | Total | Status |
|---|---|---|---|
| tokenize | 26 | 26 | ok |
| parse | 18 | 18 | ok |
| unify | 28 | 28 | ok |
| eval | 25 | 25 | ok |
| builtins | 19 | 19 | ok |
| semi_naive | 8 | 8 | ok |
| negation | 10 | 10 | ok |
| aggregates | 18 | 18 | ok |
| api | 17 | 17 | ok |
| magic | 22 | 22 | ok |
| demo | 18 | 18 | ok |