map is:exact -package:text -package:bytestring -package:aeson -package:case-insensitive -package:base-compat -package:blaze-html -package:containers -package:conduit -package:incipit-base -package:base-prelude -package:insert-ordered-containers -package:basement package:monoidal-containers
O(n) Transform this map by applying a function to every value.