map is:exact -package:text -package:amazonka-core -package:case-insensitive -package:Cabal-syntax -package:containers -package:monoidal-containers -package:filepath -package:integration -package:base-prelude -package:base-compat -package:foldl -package:aeson package:basement
Map all element a from a block to a new block of b
Map all elements in a list