map is:exact -package:text -package:dense-linear-algebra -package:aeson -package:Cabal-syntax -package:blaze-html -package:dlist -package:base-prelude -package:conduit -package:case-insensitive -package:integration -package:invertible -package:bytestring package:monoidal-containers
O(n) Transform this map by applying a function to every value.