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Within LTS Haskell 24.45 (ghc-9.10.3)

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1. mappend :: Monoid a => a -> a -> a

   relude	Relude.Monoid

   An associative operation NOTE: This method is redundant and has the default implementation mappend = (<>) since base-4.11.0.0. Should it be implemented manually, since mappend is a synonym for (<>), it is expected that the two functions are defined the same way. In a future GHC release mappend will be removed from Monoid.

2. mapFields :: forall c (ts :: [(Symbol, Type)]) . RecMapMethod c ElField ts => (forall a . c a => a -> a) -> FieldRec ts -> FieldRec ts

   vinyl	Data.Vinyl

   Apply a typeclass method to each field of a FieldRec. This is a specialization of rmapMethod.

3. mapFields :: forall c (ts :: [(Symbol, Type)]) . RecMapMethod c ElField ts => (forall a . c a => a -> a) -> FieldRec ts -> FieldRec ts

   vinyl	Data.Vinyl.Class.Method

   Apply a typeclass method to each field of a FieldRec. This is a specialization of rmapMethod.

4. mapDefault :: Ord key => elem -> key -> Accessor (Map key elem) elem

   distributed-process	Control.Distributed.Process.Internal.StrictContainerAccessors

   No documentation available.

5. mapMaybe :: Ord key => key -> Accessor (Map key elem) (Maybe elem)

   distributed-process	Control.Distributed.Process.Internal.StrictContainerAccessors

   No documentation available.

6. mapF :: (IsList t, Item t ~ (k, v), Buildable k, Buildable v) => t -> Builder

   fmt	Fmt

   A simple JSON-like map formatter; works for Map, HashMap, etc, as well as ordinary lists of pairs.

   >>> mapF [("a", 1), ("b", 4)]
   "{a: 1, b: 4}"
   

   For multiline output, use jsonMapF.

7. mapF' :: (IsList t, Item t ~ (k, v)) => (k -> Builder) -> (v -> Builder) -> t -> Builder

   fmt	Fmt

   A version of mapF that lets you supply your own building function for keys and values.

8. mapF :: (IsList t, Item t ~ (k, v), Buildable k, Buildable v) => t -> Builder

   fmt	Fmt.Internal.Formatters

   A simple JSON-like map formatter; works for Map, HashMap, etc, as well as ordinary lists of pairs.

   >>> mapF [("a", 1), ("b", 4)]
   "{a: 1, b: 4}"
   

   For multiline output, use jsonMapF.

9. mapF' :: (IsList t, Item t ~ (k, v)) => (k -> Builder) -> (v -> Builder) -> t -> Builder

   fmt	Fmt.Internal.Formatters

   A version of mapF that lets you supply your own building function for keys and values.

10. mapExcept :: (Either e a -> Either e' b) -> Except e a -> Except e' b

    hasql	Hasql.TestingKit.Preludes.Base

    Map the unwrapped computation using the given function.

    • runExcept (mapExcept f m) = f (runExcept
      m)

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