map -package:containers -package:incipit-base -package:conduit -package:base-prelude -package:insert-ordered-containers -package:dlist -package:amazonka-core -package:monoidal-containers -package:invertible -package:bytestring -package:dense-linear-algebra is:exact package:basement
Map all element a from a block to a new block of b
Map all elements in a list