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