:: (a -> b) -> [a] -> [b] is:exact -package:hspec-core -package:appar -package:ghc -package:base-compat -package:deepseq -package:incipit-base -package:integration -package:shelly -package:semigroupoids -package:Cabal-syntax -package:adjunctions package:vector
O(n) Map a function over a vector.