map -package:containers -package:Cabal-syntax -package:charset -package:aeson -package:basement -package:dlist -package:monoidal-containers -package:integration -package:case-insensitive -package:base-compat-batteries -package:conduit -package:psqueues -package:filepath -is:exact -package:foldl -package:unordered-containers -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