# Pastebin 0IaxP9K6
(defn factorial [n]
  {:pre [(integer? n) (not (neg? n))]}
  (loop [acc 1, n n]
    (if (zero? n) acc (recur (*' acc n) (dec n)))))
;form-init2529271879576733724.clj:4 recur arg for primitive local: acc is not matching primitive, had: Object, needed: long
;Auto-boxing loop arg: acc