head package:conduit

head :: Monad m => ConduitT a o m (Maybe a)
conduit Data.Conduit.Combinators
Take a single value from the stream, if available.
head :: Monad m => ConduitT a o m (Maybe a)
conduit Data.Conduit.List
Take a single value from the stream, if available. Subject to fusion Since 0.3.0
headC :: Monad m => ConduitT a o m (Maybe a)
conduit Conduit
Take a single value from the stream, if available.
headCE :: (Monad m, IsSequence seq) => ConduitT seq o m (Maybe (Element seq))
conduit Conduit
Get the next element in the chunked stream.
headDefC :: Monad m => a -> ConduitT a o m a
conduit Conduit
Same as headC, but returns a default value if none are available from the stream.
headDef :: Monad m => a -> ConduitT a o m a
conduit Data.Conduit.Combinators
Same as head, but returns a default value if none are available from the stream.
headE :: (Monad m, IsSequence seq) => ConduitT seq o m (Maybe (Element seq))
conduit Data.Conduit.Combinators
Get the next element in the chunked stream.
headS :: Monad m => StreamConsumer a m (Maybe a)
conduit Data.Conduit.Internal.List.Stream