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1. epsilonMaybeEq :: (Show a, RealFloat a) => a -> a -> a -> Maybe String

   massiv-test	Test.Massiv.Utils

   No documentation available.

2. fromMaybe :: a -> Maybe a -> a

   massiv-test	Test.Massiv.Utils

   The fromMaybe function takes a default value and a Maybe value. If the Maybe is Nothing, it returns the default value; otherwise, it returns the value contained in the Maybe.

   Examples

   Basic usage:

   >>> fromMaybe "" (Just "Hello, World!")
   "Hello, World!"
   

   >>> fromMaybe "" Nothing
   ""
   

   Read an integer from a string using readMaybe. If we fail to parse an integer, we want to return 0 by default:

   >>> import GHC.Internal.Text.Read ( readMaybe )
   
   >>> fromMaybe 0 (readMaybe "5")
   5
   
   >>> fromMaybe 0 (readMaybe "")
   0
   

3. suchThatMaybe :: Gen a -> (a -> Bool) -> Gen (Maybe a)

   massiv-test	Test.Massiv.Utils

   Tries to generate a value that satisfies a predicate. If it fails to do so after enough attempts, returns Nothing.

4. mapMaybe :: (a -> Maybe b) -> MonoidalIntMap a -> MonoidalIntMap b

   monoidal-containers	Data.IntMap.Monoidal

   No documentation available.

5. mapMaybeWithKey :: (Int -> a -> Maybe b) -> MonoidalIntMap a -> MonoidalIntMap b

   monoidal-containers	Data.IntMap.Monoidal

   No documentation available.

6. mapMaybe :: (a -> Maybe b) -> MonoidalIntMap a -> MonoidalIntMap b

   monoidal-containers	Data.IntMap.Monoidal.Strict

   No documentation available.

7. mapMaybeWithKey :: (Int -> a -> Maybe b) -> MonoidalIntMap a -> MonoidalIntMap b

   monoidal-containers	Data.IntMap.Monoidal.Strict

   No documentation available.

8. mapMaybe :: forall k a b . (a -> Maybe b) -> MonoidalMap k a -> MonoidalMap k b

   monoidal-containers	Data.Map.Monoidal

   No documentation available.

9. mapMaybeWithKey :: (k -> a -> Maybe b) -> MonoidalMap k a -> MonoidalMap k b

   monoidal-containers	Data.Map.Monoidal

   No documentation available.

10. traverseMaybeWithKey :: Applicative f => (k -> a -> f (Maybe b)) -> MonoidalMap k a -> f (MonoidalMap k b)

    monoidal-containers	Data.Map.Monoidal

    No documentation available.

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