运算符重载在Clojure [英] Operator Overloading in Clojure

问题描述

甚至仔细查看关于Clojure的文档，我没有看到任何关于Clojure是否支持操作符重载的直接确认。

如果是，有人可以给我提供一个如何重载的快速剪辑，让我们说，+运算符委托一些预定义的方法，我们可以调用 myPlus 。

我是新的Clojure，所以有人的帮助在这里将非常感激。

 （defn ** [xy]（Math / pow xy））$ +运算符（和一些其他数学运算符）是Clojure中的一个特例，因为它是一个特殊的例子。是内联的（对于二元情况，至少）。你可以在一定程度上避免这种情况，不要引用 clojure.core （或排除 clojure.core / + ） 
 
 
 
要创建一个命名空间，其中+被重新定义：
 （ns my-ns 
（：refer-clojure：exclude [+]））
 
（defn + [xy]（println xy））
 
（+lookma）
  
是让你的+一个多方法，并为数字情况调用核心+函数。
 
Even looking closely over documentation on Clojure, I do not see any direct confirmation as to whether or not Clojure supports operator overloading.

If it does, could someone provide me with a quick snipplet of how to overload, let's say, the "+" operator to delegate to some predefined method that we can call myPlus.

I am very new to Clojure, so someone's help here would be greatly appreciated.
解决方案
Clojure's (as any Lisp's) operators are plain functions; you can define an "operator" like a function:
(defn ** [x y] (Math/pow x y))
The "+" operator (and some other math-operators) is a special case in Clojure, since it is inlined (for the binary case, at least). You can to a certain extent avoid this by not referring to clojure.core (or excluding clojure.core/+) in your namespace, but this can be very hairy.

To create a namespace where + is redefined:
(ns my-ns
  (:refer-clojure :exclude [+]))

(defn + [x y] (println x y))

(+ "look" "ma")
One good strategy would probably be to make your + a multimethod and call core's + function for the numeric cases.

                        
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