map is:exact -package:lens -package:charset -package:basement -package:bytestring -package:pipes -package:monoidal-containers -package:base-compat-batteries -package:containers -package:filepath -package:insert-ordered-containers -package:dlist 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.