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  1. maybeToLeft :: b -> Maybe a -> Either a b

    either Data.Either.Combinators

    Maybe produce a Left, otherwise produce a Right. 

    >>> maybeToLeft "default" (Just 12)
Left 12

    >>> maybeToLeft "default" Nothing
Right "default"

  2. maybeToRight :: b -> Maybe a -> Either b a

    either Data.Either.Combinators

    Maybe produce a Right, otherwise produce a Left. 

    >>> maybeToRight "default" (Just 12)
Right 12

    >>> maybeToRight "default" Nothing
Left "default"

  3. maybeAbort :: Exceptional e a -> Maybe e -> Exceptional e a

    explicit-exception Control.Monad.Exception.Asynchronous.Lazy

    No documentation available.

  4. maybeAbort :: Exceptional e a -> Maybe e -> Exceptional e a

    explicit-exception Control.Monad.Exception.Asynchronous.Strict

    No documentation available.

  5. maybeToList :: Maybe a -> [a]

    rio RIO.Prelude

    The maybeToList function returns an empty list when given Nothing or a singleton list when given Just.

    Examples

    Basic usage: 
    >>> maybeToList (Just 7)
[7]

    >>> maybeToList Nothing
[]
    One can use maybeToList to avoid pattern matching when combined with a function that (safely) works on lists: 
    >>> import GHC.Internal.Text.Read ( readMaybe )

>>> sum $ maybeToList (readMaybe "3")
3

>>> sum $ maybeToList (readMaybe "")
0

  6. maybeH :: Monad m => Maybe v -> (v -> m ()) -> Maybe (m ()) -> m ()

    shakespeare Text.Hamlet

    Runs the second argument with the value in the first, if available. Otherwise, runs the third argument, if available.

  7. maybeToList :: Maybe a -> [a]

    errors Control.Error

    The maybeToList function returns an empty list when given Nothing or a singleton list when given Just.

    Examples

    Basic usage: 
    >>> maybeToList (Just 7)
[7]

    >>> maybeToList Nothing
[]
    One can use maybeToList to avoid pattern matching when combined with a function that (safely) works on lists: 
    >>> import GHC.Internal.Text.Read ( readMaybe )

>>> sum $ maybeToList (readMaybe "3")
3

>>> sum $ maybeToList (readMaybe "")
0

  8. maybeT :: Monad m => m b -> (a -> m b) -> MaybeT m a -> m b

    errors Control.Error.Util

    Case analysis for MaybeT Use the first argument if the MaybeT computation fails, otherwise apply the function to the successful result.

  9. maybeEntropy :: MaybeEntropy d => d -> Maybe Double

    statistics Statistics.Distribution

    Returns the entropy of a distribution, in nats, if such is defined.

  10. maybeMean :: MaybeMean d => d -> Maybe Double

    statistics Statistics.Distribution

    No documentation available.

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