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