complement

function

since v0.0-927

clojure.core/complement

Edit

Details:

Examples:

(def a 10)
((complement #(= a %)) 12)
;;=> true

See Also:

• not

Takes a fn f and returns a fn that takes the same arguments as f,
has the same effects, if any, and returns the opposite truth value.

(defn complement
  [f]
  (fn
    ([] (not (f)))
    ([x] (not (f x)))
    ([x y] (not (f x y)))
    ([x y & zs] (not (apply f x y zs)))))