Clojure中-toString和.toString的区别(The difference between -toString vs .toString in Clojure)

 在关于:gen-class 解剖中的gen-class的解释之后，我使用leiningen来获取类文件。 
 
 
 
 leon new pinger创建一个项目。 
 
 
 cd src和mkdir some并在mkdir some创建了一个Example.clj文件。 
 
 
 在project.clj添加:aot [some.Example] （或:aot :all ）。 
 
 
 Example.clj如下所示： 
 
(ns some.Example
  (:gen-class))

(defn -toString
  [this]
  "Hello, World!")
 
 然后我执行lein compile来获取target目录中的类。 
 
 然后，我用lein repl执行这段代码。 
 
(-toString (some.Example.)) ; should return "Hello, World!"
 
 但是，我收到了此错误消息。 
 
CompilerException java.lang.RuntimeException: Unable to resolve symbol: 
-toString in this context, compiling:(/private/var/folders/nw/dmb7jh3d2hq89296z2gnntqm0000gn/T/form-
init7145760420048735997.clj:1:1) 
 
 .toString工作正常。 
 
user=> (.toString (some.Example.))
"Hello, World!"
 
 该网站解释说，我应该从-toString和.toString获得相同的结果，但是我只用.toString获得了正确的结果。 
 
 Clojure中的-toString和.toString什么区别？ 为什么-toString在示例中引发错误？ 

Following the explanation about :gen-class in The Anatomy of gen-class, I used leiningen to get the class files.
 
 
 
leon new pinger to create a project.
 
 
cd src and mkdir some and created a Example.clj file in it.
 
 
Added :aot [some.Example] (or :aot :all) in project.clj.
 
 
The Example.clj is as follows:
 
(ns some.Example
  (:gen-class))

(defn -toString
  [this]
  "Hello, World!")
 
Then I executed lein compile to get the classes in target directory.
 
Then, I was executing this code with lein repl.
 
(-toString (some.Example.)) ; should return "Hello, World!"
 
However, I got this error message. 
 
CompilerException java.lang.RuntimeException: Unable to resolve symbol: 
-toString in this context, compiling:(/private/var/folders/nw/dmb7jh3d2hq89296z2gnntqm0000gn/T/form-
init7145760420048735997.clj:1:1) 
 
.toString works fine. 
 
user=> (.toString (some.Example.))
"Hello, World!"
 
The website explains that I should get the same results from both -toString and .toString, but I got only correct results with .toString. 
 
What's the difference between -toString and .toString in Clojure? Why -toString raises an error in the example? 

原文：https://stackoverflow.com/questions/21392494