map is:exact -package:conduit -package:basement -package:aeson -package:monoidal-containers -package:bytestring -package:base -package:invertible -package:foldl -package:pipes -package:containers 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.