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1. mapM_ :: (Foldable t, Monad m) => (a -> m b) -> t a -> m ()

   base-compat-batteries	Control.Monad.Compat

   Map each element of a structure to a monadic action, evaluate these actions from left to right, and ignore the results. For a version that doesn't ignore the results see mapM. mapM_ is just like traverse_, but specialised to monadic actions.

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

   base-compat-batteries	Data.Monoid.Compat

   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.

3. mapValName :: Name

   deriving-compat	Data.Deriving.Internal

   No documentation available.

4. mappendValName :: Name

   deriving-compat	Data.Deriving.Internal

   No documentation available.

5. mapf :: (a -> b) -> Format r (b -> t) -> Format r (a -> t)

   formatting	Formatting

   Functorial map over a formatter's input. Example: format (mapf (drop 1) string) "hello"

6. mapf :: (a -> b) -> Format r (b -> t) -> Format r (a -> t)

   formatting	Formatting.Internal

   Functorial map over a formatter's input. Example: format (mapf (drop 1) string) "hello"

7. mapTrack :: (Track -> Track) -> T -> T

   midi	Sound.MIDI.File

   Apply a function to each track.

8. mapBody :: (T -> T) -> TrackEvent -> TrackEvent

   midi	Sound.MIDI.File.Event

   No documentation available.

9. mapVoice :: (T -> T) -> T -> T

   midi	Sound.MIDI.File.Event

   No documentation available.

10. mapError :: forall e1 e2 (r :: EffectRow) a . Member (Error e2 :: (Type -> Type) -> Type -> Type) r => (e1 -> e2) -> Sem ((Error e1 :: (Type -> Type) -> Type -> Type) ': r) a -> Sem r a

    polysemy	Polysemy.Error

    Transform one Error into another. This function can be used to aggregate multiple errors into a single type.

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