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amalloy/gist:1062579

Created July 3, 2011 20:31
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gistfile1.clj
(defn move-piece [board old-pos new-pos]
(let [moving-piece (get-in board old-pos)]
(reduce (fn [acc [ks v]] (assoc-in acc ks v)),
board, [[old-pos nil] [new-pos moving-piece]])))
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