如何在ClojureScript中使用命名参数？

Question

在clojure中,我可以使用defnk来获取命名参数.如何在ClojureScript中实现相同的功能？

Answer 1

ClojureScript中命名的args功能与Clojure中的相同:

(defn f [x & {:keys [a b]}] 
  (println (str "a is " a " and b is " b)))

(f 1)
; a is  and b is 

(f 1 :a 42)
; a is 42 and b is 

(f 1 :a 42 :b 108)
; a is 42 and b is 108

如果您需要默认值,请将原始内容更改为:

(defn f [x & {:keys [a b] :or {a 999 b 9}}]
  (println (str "a is " a " and b is " b)))

(f 1)
; a is 999 and b is 9

这与Clojure的好答案有关- 命名参数