map -package:containers -package:Cabal-syntax -package:blaze-html -package:conduit -package:base-compat-batteries -package:amazonka-core -package:base-prelude is:exact -package:integration -package:bytestring -package:foldl -package:incipit-base package:basement
Map all element a from a block to a new block of b
Map all elements in a list