16 lines
399 B
Plaintext
16 lines
399 B
Plaintext
// ancestors
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parentof("douglas", "john").
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parentof("john", "bob").
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parentof("bob", "ebbon").
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parentof("douglas", "jane").
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parentof("jane", "jan").
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ancestorof(A, B) <- parentof(A, B).
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ancestorof(A, C) <- ancestorof(A, B), parentof(B,C).
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grandparentof(A, B) <- parentof(A, C), parentof(C, B).
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cousins(A,B) <- grandparentof(C,A), grandparentof(C,B).
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parentof[`arg](A, B) -> int[32](A), !string(B). |