map -package:containers -package:base-prelude -package:case-insensitive -package:Cabal-syntax -package:monoidal-containers -package:amazonka-core -package:imports is:exact -package:blaze-html -package:foldl -package:ghc -package:dense-linear-algebra package:basement
Map all element a from a block to a new block of b
Map all elements in a list