map -package:containers -package:base-prelude -package:amazonka-core -package:Cabal-syntax -package:base -package:invertible -package:blaze-html -package:foldl -package:bytestring is:exact -package:base-compat-batteries -package:insert-ordered-containers package:basement
Map all element a from a block to a new block of b
Map all elements in a list