:: (a -> b) -> [a] -> [b] is:exact -package:stm-hamt -package:generic-deriving -package:adjunctions -package:basement -package:base-compat -package:base-compat-batteries -package:shelly -package:base -package:Cabal-syntax -package:foundation -package:base-prelude package:vector
O(n) Map a function over a vector.