I didn't spot Clojure here yet: (->> [1,2,3,4,5] (filter #(-> % (mod 3) (= 1))) (map #(* % %)) (reduce +)) #( ... ) is an anonymous

I didn't spot Clojure here yet: (->> [1,2,3,4,5] (filter #(-> % (mod 3) (= 1))) (map #(* % %)) (reduce +)) #( ... ) is an anonymous function, arrows are threading macros: https://clojure.org/guides/threading_macros https://clojure.org/guides/threading_macros If you wanted more trickery you could play with transducers and compose them with "comp".