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Within LTS Haskell 24.39 (ghc-9.10.3)

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1. mapMaybeEdgeKeys :: (Edge e1, Ord n) => (e0 n -> Maybe (e1 n)) -> Graph e0 n el nl -> Graph e1 n el nl

   comfort-graph	Data.Graph.Comfort

   You may only use this for filtering edges and use more specialised types as a result. You must not alter source and target nodes of edges.

2. fuseBothMaybe :: forall (m :: Type -> Type) a b u v c r . Monad m => Pipe a b u m v -> Pipe b c v m r -> Pipe a c u m (Maybe v, r)

   conduino	Data.Conduino

   Like fuseBoth and &|, except does not wait for the upstream pipe to terminate. Return Nothing in the first field if the upstream pipe hasn't terminated, and Just if it has, with the terminating value.

3. iterateMaybe :: forall o i u (m :: Type -> Type) . (o -> Maybe o) -> o -> Pipe i o u m ()

   conduino	Data.Conduino.Combinators

   A version of iterate that can choose to terminate and stop by returning Nothing.

4. repeatMaybeM :: Monad m => m (Maybe o) -> Pipe i o u m ()

   conduino	Data.Conduino.Combinators

   Repeat a monadic action, yielding the item in the Just every time. As soon as it sees Nothing, stop producing forever. Remember that each item will only be "executed" when something downstream requests output.

5. unfoldMaybe :: forall s o i u (m :: Type -> Type) . (s -> Maybe (o, s)) -> s -> Pipe i o u m ()

   conduino	Data.Conduino.Combinators

   A version of unfold that can terminate and end by returning Nothing.

6. objectEntryMaybeParser :: (Char -> Parser a) -> Parser (Maybe (Text, Value))

   conduit-aeson	Data.Conduit.Aeson

   Parse JSON key value pairs followed either by a delimiter or terminating character ']', which is also supplied to the delimiter parser. Nothing is returned when terminating character is reached.

7. valueMaybeParser :: (Char -> Parser a) -> Parser (Maybe Value)

   conduit-aeson	Data.Conduit.Aeson

   Parse a JSON value followed either by a delimiter or terminating character ']', which is also supplied to the delimiter parser. Nothing is returned when terminating character is reached.

8. mapMaybeSerialized :: forall s t (m :: Type -> Type -> Type) (n :: Type -> Type) a . (Monoid s, Monoid t, InputParsing (m s), InputParsing (m t), s ~ ParserInput (m s), t ~ ParserInput (m t), InputMappableParsing m, Functor n) => (s -> Maybe t) -> (t -> Maybe s) -> Format (m s) n s a -> Format (m t) n t a

   construct	Construct

   Converts a format for serialized streams of type s so it works for streams of type t instead. The argument functions may return Nothing to indicate they have insuficient input to perform the conversion.

9. mapMaybeValue :: forall (m :: Type -> Type) a b (n :: Type -> Type) s . (Monad m, Parsing m, Show a, Show b, AlternativeFail n) => (a -> Maybe b) -> (b -> Maybe a) -> Format m n s a -> Format m n s b

   construct	Construct

   Converts a format for in-memory values of type a so it works for values of type b instead. The argument functions may signal conversion failure by returning Nothing.

10. mapMaybeParserInput :: (InputMappableParsing m, InputParsing (m s), s ~ ParserInput (m s), Monoid s, Monoid s') => (s -> Maybe s') -> (s' -> Maybe s) -> m s a -> m s' a

    construct	Construct.Classes

    Converts a parser accepting one input stream type to another just like mapParserInput, except the argument functions can return Nothing to indicate they need more input.

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