Returns true if the number is really a Number.
Following is the syntax.
Following is an example of the number test function.
(ns clojure.examples.hello (:gen-class)) ;; This program displays Hello World (defn Example  (def x (number? 0)) (println x) (def x (number? 0.0)) (println x) (def x (number? :a)) (println x)) (Example)
The above program produces the following output.
true true false