map is:exact -package:charset -package:basement -package:containers -package:bytestring -package:case-insensitive -package:aeson -package:foldl -package:invertible -package:pipes -package:conduit package:psqueues
O(n) Modify every value in the queue.
O(n) Modify every value in the queue.
O(n) Modify every value in the queue.