map is:exact -package:lens -package:dlist -package:base-compat-batteries -package:containers -package:invertible -package:aeson -package:blaze-html -package:conduit -package:bytestring -package:hedgehog -package:case-insensitive 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.