:: (a -> b) -> [a] -> [b] is:exact -package:singletons -package:Cabal-syntax -package:basement -package:base-compat-batteries -package:generic-deriving -package:adjunctions -package:appar -package:shelly -package:incipit-base -package:base-compat -package:comonad -package:imports package:vector
O(n) Map a function over a vector.