map is:exact -package:base -package:base-prelude -package:bytestring -package:basement -package:dlist -package:containers -package:os-string -package:pipes -package:charset -package:imports -package:base-compat 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.