map -package:containers -package:base-compat -package:bytestring -package:dense-linear-algebra is:exact -package:blaze-html -package:monoidal-containers -package:Cabal-syntax -package:amazonka-core -package:case-insensitive -package:hedgehog -package:imports package:basement
Map all element a from a block to a new block of b
Map all elements in a list