map is:exact -package:text -package:Cabal-syntax -package:dlist -package:foldl -package:bytestring -package:case-insensitive -package:imports -package:integration -package:amazonka-core -package:hedgehog -package:monoidal-containers -package:blaze-html package:basement
Map all element a from a block to a new block of b
Map all elements in a list