map -package:containers -is:exact -package:charset -package:bytestring -is:exact -package:incipit-base -package:base-compat -package:imports -package:dlist -package:case-insensitive -package:monoidal-containers package:conduit is:exact

Apply a transformation to all values in a stream. Subject to fusion
Apply a transformation to all values in a stream. Subject to fusion Since 0.3.0