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

   rebase	Rebase.Prelude

   Maybe produce a Left, otherwise produce a Right.

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

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

3. maybeToLeft :: r -> Maybe l -> Either l r

   relude	Relude.Monad.Either

   Maps Maybe to Either wrapping default value into Right.

   >>> maybeToLeft True (Just "aba")
   Left "aba"
   
   >>> maybeToLeft True Nothing
   Right True
   

4. maybeToLeft :: r -> Maybe l -> Either l r

   protolude	Protolude.Either

   No documentation available.

5. maybeToLeft :: r -> Maybe l -> Either l r

   incipit-base	Incipit.Either

   Turn Just into Left and Nothing into Right with the supplied value.

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