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1. gmapAccumM :: (Data d, Monad m) => (forall e . Data e => a -> e -> (a, m e)) -> a -> d -> (a, m d)

   syb	Data.Generics.Twins

   gmapM with accumulation

2. gmapAccumQ :: Data d => (forall e . Data e => a -> e -> (a, q)) -> a -> d -> (a, [q])

   syb	Data.Generics.Twins

   gmapQ with accumulation

3. gmapAccumQl :: Data d => (r -> r' -> r) -> r -> (forall e . Data e => a -> e -> (a, r')) -> a -> d -> (a, r)

   syb	Data.Generics.Twins

   gmapQl with accumulation

4. gmapAccumQr :: Data d => (r' -> r -> r) -> r -> (forall e . Data e => a -> e -> (a, r')) -> a -> d -> (a, r)

   syb	Data.Generics.Twins

   gmapQr with accumulation

5. gmapAccumT :: Data d => (forall e . Data e => a -> e -> (a, e)) -> a -> d -> (a, d)

   syb	Data.Generics.Twins

   gmapT with accumulation

6. concatMapM :: Monad m => (a -> m [b]) -> [a] -> m [b]

   extra	Control.Monad.Extra

   A version of concatMap that works with a monadic predicate.

7. mconcatMapM :: (Monad m, Monoid b) => (a -> m b) -> [a] -> m b

   extra	Control.Monad.Extra

   A version of mconcatMap that works with a monadic predicate.

8. mconcatMap :: Monoid b => (a -> b) -> [a] -> b

   extra	Data.List.Extra

   Version on concatMap generalised to a Monoid rather than just a list.

   mconcatMap Sum [1,2,3] == Sum 6
   \f xs -> mconcatMap f xs == concatMap f xs
   

9. concatMapM :: Monad m => (a -> m [b]) -> [a] -> m [b]

   extra	Extra

   A version of concatMap that works with a monadic predicate.

10. mconcatMap :: Monoid b => (a -> b) -> [a] -> b

    extra	Extra

    Version on concatMap generalised to a Monoid rather than just a list.

    mconcatMap Sum [1,2,3] == Sum 6
    \f xs -> mconcatMap f xs == concatMap f xs
    

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