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