(drop-last s)
(drop-last n s)
Return a lazy sequence of all but the last n (default 1) items in coll
Source
(defn
drop-last
"Return a lazy sequence of all but the last n (default 1) items in coll"
([s] (drop-last 1 s))
([n s] (map (fn [x _] x) s (drop n s))))