map -package:containers -package:aeson -package:invertible -package:base-compat -package:ghc -package:charset -package:basement -package:Cabal-syntax -package:monoidal-containers -package:foldl -package:bytestring -package:insert-ordered-containers -package:psqueues -package:integration -is:exact -package:dense-linear-algebra -package:case-insensitive -package:blaze-html -package:vector package:vector-stream
Map a monadic function over a
Stream
Execute a monadic action for each element of the
Stream
Apply monadic function to each element and drop all Nothings