对于Ludum Dare 36,我决定尝试使用基于文本的冒险游戏。它可以工作,但出现非致命错误:


  线程“主”中的异常java.lang.ClassCastException:
  seesaw.core.proxy $ javax.swing.JPanel $ Tag $ fd407141无法转换为
  clojure.lang.IFn,
  编译:(/ tmp / form-init2500875452880490300.clj:1:73)


(ns ludumdare36.core
  (:gen-class :main true)
  (:use seesaw.core))

(def story [
            "Of all the most famous living rooms Transned's was the most famous"
            "two"
            "three"
            "four"
            "five"
            "six"
            "seven"
            "eight"
            "nine"
            ])

(def mainWindow (frame :title "Hello"  :content "" :on-close :exit))

(defn draw
  [items & args] (
                  (def mainWidget (vertical-panel :items items) )
                  (config! mainWidget :size [640 :by 480])
                  (config! mainWindow :content mainWidget)
                  (invoke-later(-> mainWindow pack! show!))))

(defn writeStory [text index & args]
  (let [makeButton (fn mb [index text]
                     (button :text text :mnemonic \N :halign :center :listen [:action (partial writeStory (get story index) (inc index))]))
        makeStoryNode (fn ms [text index]
                        (vector text (makeButton (inc index) "Yes") (makeButton (+ index 2 ) "No")))
        ]
    (draw (makeStoryNode text index))))

(defn -main
  [& args]
  (writeStory (get story 0) 0))


Ifn错误在堆栈上有很多记录,但是我不确定哪个函数引起了该问题。也不确定我的代码质量。因此,请随时发表评论等。如何重构以消除Ifn错误?我不明白什么?

最佳答案

从第21行开始,在功能主体周围有额外的paren组; Clojure可能会认为您想调用(def...) exp返回的函数可能是潜在原因。但这会导致一个Swing对象无法原样调用。

08-05 18:09