Hello,
Is there a way to negate a goal in core.logic? I have written this goal
below, and I would like to use it to query all the pairs of people who are
*not* relatives according to my facts (for dating purposes of course :-D)
(defn relative [p1 p2]
(conde
[(parent p1 p2)]
[(parent p2 p1)]
[(sibling p1 p2)]
[(cousin p1 p2)]
[(nephew p1 p2)]
[(uncle p1 p2)]))
Thanks,
Stathis
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