:: Ord a => [a] -> [a] is:exact -package:fgl -package:errors -package:base-prelude -package:lens -package:witherable -package:integration -package:containers package:lifted-base

Generalized version of runInBoundThread.
Generalized version of runInUnboundThread.
Generalized version of mask_.
Generalized version of uninterruptibleMask_.