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