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  1. maybeAccumulateRangeFromPyramid :: Transform sig v => (v -> v -> v) -> [sig v] -> (Int, Int) -> Maybe v

    synthesizer-core Synthesizer.Generic.Filter.NonRecursive

    No documentation available.

  2. maybeM :: Monad m => b -> (a -> m b) -> Maybe a -> m b

    Chart Graphics.Rendering.Chart.Utils

    Version of maybe that returns a monadic value.

  3. maybeToExceptS :: forall (m :: Type -> Type) a b . (Functor m, Monad m) => Automaton (MaybeT m) a b -> Automaton (ExceptT () m) a b

    automaton Data.Automaton.Trans.Except

    Converts an Automaton in MaybeT to an Automaton in ExceptT. Whenever Nothing is thrown, throw () instead.

  4. maybeExit :: forall (m :: Type -> Type) a . Monad m => Automaton (MaybeT m) (Maybe a) a

    automaton Data.Automaton.Trans.Maybe

    Just a is passed along, Nothing causes the whole Automaton to exit.

  5. maybeToExceptS :: forall (m :: Type -> Type) a b . (Functor m, Monad m) => Automaton (MaybeT m) a b -> Automaton (ExceptT () m) a b

    automaton Data.Automaton.Trans.Maybe

    Converts an Automaton in MaybeT to an Automaton in ExceptT. Whenever Nothing is thrown, throw () instead.

  6. maybeToExceptT :: forall (m :: Type -> Type) e a . Functor m => e -> MaybeT m a -> ExceptT e m a

    automaton Data.Automaton.Trans.Maybe

    Convert a MaybeT computation to ExceptT, with a default exception value.

  7. maybe_ :: SqlDeconstructMaybe be a nonNullA s => QGenExpr ctxt be s y -> (nonNullA -> QGenExpr ctxt be s y) -> a -> QGenExpr ctxt be s y

    beam-core Database.Beam.Query

    Given an object (third argument) which may or may not be null, return the default value if null (first argument), or transform the value that could be null to yield the result of the expression (second argument)

  8. maybeType :: DataType be a -> DataType be (Maybe a)

    beam-core Database.Beam.Query.DataTypes

    Haskell requires DataTypes to match exactly. Use this function to convert a DataType that expects a concrete value to one expecting a Maybe

  9. maybeOption :: forall s (m :: Type -> Type) u a . Stream s m Char => ParsecT s u m a -> ParsecT s u m (Maybe a)

    hsemail Text.Parsec.Rfc2822

    Return Nothing if the given parser doesn't match. This combinator is included in the latest parsec distribution as optionMaybe, but ghc-6.6.1 apparently doesn't have it.

  10. maybeYield :: forall o (k :: Type -> Type) . Maybe o -> Plan k o ()

    machines Data.Machine.Plan

    Like yield, except stops if there is no value to yield.

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