clojure list manipulation multilist to list

Question

Is there a clojure function to do:

((1 2) (3) (5 1) (2)) => (1 2 3 5 1 2)

(def a-list '((1 2) (3) (5 1) (2)))
(my-func a-list)
   ;; =>(1 2 3 5 1 2)

Answer 1

(apply concat a-list) ;; (1 2 3 5 1 2)

Answer 2

(flatten a-list)

will do the trick as well.

See:
http://clojuredocs.org/clojure_core/clojure.core/apply
http://clojuredocs.org/clojure_core/clojure.core/concat
http://clojuredocs.org/clojure_core/clojure.core/flatten