map is:exact -package:text -package:containers -package:basement -package:invertible -package:blaze-html -package:os-string -package:aeson -package:foldl -package:base -package:pipes -package:imports -package:regex-tdfa -package:unordered-containers -package:vector package:monoidal-containers
O(n) Transform this map by applying a function to every value.