map is:exact -package:lens -package:bytestring -package:imports -package:foldl -package:blaze-html -package:dlist -package:charset -package:basement -package:base -package:os-string -package:invertible 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.