clojure - 代码在 REPL 中运行，但如果保存到文件则不会

Question

我正在尝试创建一个基于文本的 Clojure 游戏(灵感来自 Land of Lisp)。

(def *nodes* {:living-room "you are in the living-room. a wizard is snoring loudly on the couch."
              :garden "you are in a beautiful garden. there is a well in front of you."
              :attic "you are in the attic. there is a giant welding torch in the corner."})

(defn describe-location [location nodes]
    (nodes location))

代码在 REPL 中运行，但如果我将代码保存到文件并尝试运行:

(describe-location :attic *nodes*)

我得到了:

Exception in thread "main" java.lang.IllegalArgumentException: Wrong number of args (1) passed to: user$describe-location (wizard-game.clj: 0)

我做错了什么？
这是文件:http://dl.dropbox.com/u/3630641/wizard-game.clj

Answer 1

你的括号太多了。您需要 (describe-location :garden *nodes*) 而不是 (describe-location(:garden *nodes*))。

请记住，函数的名称在开括号之后，而不是之前:您正在调用 (:garden *nodes*) 然后调用 describe -location 结果失败，因为 describe-location 需要两个参数，而不是一个。