comp.cljs

(def sum-str (comp str +))
;; => #'sum-str

(sum-str 8 8 8)
;; => "24"

(filter (comp not zero?) [0 1 0 2 0 3 0 4])
;; => (1 2 3 4)

(def countif (comp count filter))
;; => #'countif

(countif even? [2 3 1 5 4])
;; => 2

((comp second reverse) ["a" 2 7 "b"])
;; => 7