map -package:containers -package:insert-ordered-containers -package:base-prelude is:exact -package:ghc -package:invertible -package:base-compat-batteries -package:dense-linear-algebra -package:case-insensitive -package:integration -package:amazonka-core -package:foldl package:basement
Map all element a from a block to a new block of b
Map all elements in a list