map -package:containers -package:incipit-base -package:case-insensitive -package:blaze-html -package:amazonka-core -package:base-prelude -package:insert-ordered-containers -package:hedgehog -package:foldl -package:bytestring -package:filepath package:basement is:exact
Map all element a from a block to a new block of b
Map all elements in a list