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1. mapFst :: (a -> c) -> (a, b) -> (c, b)

   Agda	Agda.Utils.Tuple

   mapFst f = f -*- id
   

2. mapFstM :: Functor m => (a -> m c) -> (a, b) -> m (c, b)

   Agda	Agda.Utils.Tuple

   Monadic mapFst.

3. mapPairM :: Applicative m => (a -> m c) -> (b -> m d) -> (a, b) -> m (c, d)

   Agda	Agda.Utils.Tuple

   Monadic version of -*-.

4. mapSnd :: (b -> d) -> (a, b) -> (a, d)

   Agda	Agda.Utils.Tuple

   mapSnd g = id -*- g
   

5. mapSndM :: Functor m => (b -> m d) -> (a, b) -> m (a, d)

   Agda	Agda.Utils.Tuple

   Monadic mapSnd.

6. mapChangeT :: (m (a, Any) -> n (b, Any)) -> ChangeT m a -> ChangeT n b

   Agda	Agda.Utils.Update

   Map a ChangeT computation (monad transformer action).

7. mapMonotonic :: (Key -> Key) -> IntSet -> IntSet

   Agda	Agda.Utils.VarSet

   The mapMonotonic f s == map f s, but works only when f is strictly increasing. The precondition is not checked. Semi-formally, we have:

   and [x < y ==> f x < f y | x <- ls, y <- ls]
   ==> mapMonotonic f s == map f s
   where ls = toList s
   

8. mapValue :: forall a (b :: Bool) . Boolean a => (a -> a) -> WithDefault' a b -> WithDefault' a b

   Agda	Agda.Utils.WithDefault

   Only modify non-Default values.

9. mapRhs :: (SentForm -> SentForm) -> Rul f -> Rul f

   BNFC	BNFC.CF

   Modify the rhsRule part of a Rule.

10. mapHead :: (a -> a) -> [a] -> [a]

    BNFC	BNFC.Utils

    Apply a function to the head of a list.

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