如何在clojure中处理java可变长度参数? [英] How to handle java variable length arguments in clojure?

问题描述

我正在将一个 java lib 包装到 clojure 中，但是我在处理可变长度参数时遇到了问题.说，

I'am wrapping a java lib into clojure, but i have problems dealing with variable length arguments. Say,

TestClass.aStaticFunction(Integer... intList){/*....*/}

我如何在 clojure 中调用这个函数?

How could i call this function in clojure?

推荐答案

由于 Java 可变参数是 实际上是数组，您可以通过传递数组来调用 Clojure 中的 vararg 函数.

Since Java varargs are actually arrays, you can call vararg functions in Clojure by passing an array.

您可以将 Clojure seq(可能通过使用 Clojure 的各种可变参数函数)转换为数组:

You could convert a Clojure seq (maybe by using Clojure's variety of variable argument functions) into an array:

 (TestClass/aStaticFunction (into-array Integer [(int 1),(int 2)]))

或

(defn a-static-function-wrapper [& args]
  (TestClass/aStaticFunction (into-array Integer args))

或者创建一个数组并手动设置其索引

Or make an array and set its indices manually

(TestClass/aStaticFunction (doto (make-array Integer 3)
                              (aset 0 first-element)
                              (aset 1 second-element)
                              (aset 2 third-element)))

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