map -package:containers is:exact -package:conduit -package:amazonka-core -package:incipit-base -package:charset -package:foldl -package:monoidal-containers -package:hedgehog -package:base-compat -package:Cabal-syntax -package:dense-linear-algebra package:basement
Map all element a from a block to a new block of b
Map all elements in a list