clojure - clojure —本地重写运算符(例如 “+”， “*”等)的正确方法

Question

覆盖“+”之类的方法的正确方法是什么？现在我有

(defn- + [x y] (replacement x y))

但这会在命令行上显示警告。

WARNING: + already refers to: #'clojure.core/+ in namespace: <MY-NAMESPACE>, being replaced by #'<MY-NAMESPACE>/+

Answer 1

您需要排除内核导入的功能:

 (ns your-ns
   (:refer-clojure :exclude [+ ...]))

 (defn + ...)