:: (a -> b) -> [a] -> [b] -package:stm-hamt -package:generic-deriving -package:adjunctions -package:ghc is:exact -package:base-compat -package:comonad -package:base-compat-batteries -package:imports -package:semigroupoids -package:incipit-base -package:basement package:vector
O(n) Map a function over a vector.