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| (defn-e nth-o [n l o] | |
| ((1 (?a . ?d) a)) | |
| ((_ (?a . ?d) _) (nth-o (dec n) d o))) |
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@fogus Pick away :) It's the pattern matching syntax that I plan on implementing in the near future to make it easier to map Prolog programs to their miniKanren cousins.