clojure - 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 中实现同样的效果？

Answer 1

ClojureScript 中的命名参数功能与 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

如果需要默认值，则将原来的更改为:

(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 - named arguments的好答案有关。