Question

当我尝试在Clojure中运行以下代码（来自REPL）时：

(dotimes [i 5]
  (.start
   (Thread.
    (fn []
      (Thread/sleep (rand 1000))
      (println (format "Finished %d on %s" i (Thread/currentThread)))))))

我收到以下错误：

java.lang.Exception: Unable to resolve symbol: i in this context
clojure.lang.Compiler$CompilerException: NO_SOURCE_FILE:6: Unable to resolve symbol: i in this context
        at clojure.lang.Compiler.analyze(Compiler.java:3713)

我在这里做错了什么？

Answer 1

您的代码适用于我使用最新的SVN（1144）。

user> (dotimes [i 5] (.start (Thread. (fn [] (Thread/sleep (rand 1000)) (println (format "Finished %d on %s" i (Thread/currentThread)))))))

Finished 0 on Thread[Thread-16,5,main]
Finished 4 on Thread[Thread-20,5,main]
Finished 3 on Thread[Thread-19,5,main]
Finished 1 on Thread[Thread-17,5,main]
Finished 2 on Thread[Thread-18,5,main]

您使用的是9月16日的版本吗？你几乎必须使用SVO版本的Clojure。它变化太快了。

Answer 2

我认为你的意思是“从Clojure调用Java”。它们仍然是fiddling with the syntax。

从Clojure调用Java

2 个答案: