;; #{} is the set literal
(def int-set #{1 2 3})
(def str-set #{"one" "two" "three"})

;; set builds one out of any collection,
;; dropping the duplicates on the way
(def from-vector (set [1 2 2 3 3 3]))

(prn int-set)
(prn str-set)
(prn from-vector)