map is:exact -package:lens -package:dlist -package:base-compat-batteries -package:basement -package:foldl -package:aeson -package:incipit-base -package:blaze-html -package:monoidal-containers -package:base -package:pipes 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.