map is:exact -package:text -package:charset -package:conduit -package:foldl -package:insert-ordered-containers -package:Cabal-syntax -package:invertible -package:dense-linear-algebra -package:blaze-html -package:ghc -package:base-compat -package:case-insensitive package:monoidal-containers
O(n) Transform this map by applying a function to every value.