clojure.core/not

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Type: function Added: Clojure 1.0 Examples: 2 Runnable: 2

([x])

Returns true if x is logical false, false otherwise.

Examples

by mattdw on 2010-07-28 ▶

(not true) false (not false) true (not nil) true ;; acts as complement of `boolean` (boolean "a string") true (not "a string") false (boolean 1) true (not 1) false

by aakoch on 2016-10-05 ▶

(not (= "a" "b")) true

See also

• clojure.core/complement (3)
• clojure.core/false?

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