Returns a new sequence where ‘x’ is the first element and ‘seq’ is the rest.
Following is the syntax.
(cons x seq)
Parameters − ‘x’ is the element which needs to be added to the sequence. ‘seq’ is the sequence list of elements.
Return Value − The new sequence with the appended element.
Following is an example of con in Clojure.
(ns clojure.examples.example (:gen-class)) ;; This program displays Hello World (defn Example  (println (cons 0 (seq [1 2 3])))) (Example)
The above program produces the following output.
(0 1 2 3)