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