too*_*ays 3 lisp recursion exception clojure
我正在尝试实施Land of Lisp's Dice of Doom游戏,而我正在获得一个Don't know how to create ISeq from: clojure.lang.PersistentList$1
.
它在调用我的add-new-dice
函数时发生:
(defn add-new-dice [board player spare-dice]
(letfn [(f [lst n]
(cond (empty? lst) nil
(zero? n) lst
:else (let [current-player (first (first lst))
current-dice (first (rest (first lst)))]
(if (and (= current-player player) (< current-dice *max-dice*))
(cons (list current-player (+ current-dice 1))
(f (rest lst) (- n 1)))
(cons (first lst) (f (rest list) n))))))]
(f board spare-dice)))
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有了这个:
(add-new-dice '[(0 1) (1 3) (0 2) (1 1)] 0 2)
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我这样做主要是为了熟悉CL代码并获得将其移植到Clojure的一些经验.
如果有人能给我一些建议,我们将不胜感激.