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Created May 19, 2015 20:43
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path-finding.clj
(defn estimate-cost [step-cost-est size y x]
(* step-cost-est
(- (+ size size) y x 2)))
(estimate-cost 900 5 0 0)
(estimate-cost 900 5 4 4)
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From Joy of Clojure, page 165

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