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Within LTS Haskell 24.51 (ghc-9.10.3)

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1. minusNaturalMaybe :: Natural -> Natural -> Maybe Natural

   base	Numeric.Natural

   Natural subtraction. Returns Nothings for non-positive results.

2. readMaybe :: Read a => String -> Maybe a

   base	Text.Read

   Parse a string using the Read instance. Succeeds if there is exactly one valid result.

   >>> readMaybe "123" :: Maybe Int
   Just 123
   

   >>> readMaybe "hello" :: Maybe Int
   Nothing
   

3. bitSizeMaybe :: Bits a => a -> Maybe Int

   base	GHC.Bits

   Return the number of bits in the type of the argument. The actual value of the argument is ignored. Returns Nothing for types that do not have a fixed bitsize, like Integer.

4. minusNaturalMaybe :: Natural -> Natural -> Maybe Natural

   base	GHC.Natural

   Natural subtraction. Returns Nothings for non-positive results.

5. naturalToWordMaybe :: Natural -> Maybe Word

   base	GHC.Natural

   Try downcasting Natural to Word value. Returns Nothing if value doesn't fit in Word.

6. naturalToWordMaybe# :: Natural -> (# (# #) | Word# #)

   base	GHC.Num

   No documentation available.

7. indexMaybe :: ByteString -> Int -> Maybe Word8

   bytestring	Data.ByteString

   O(1) ByteString index, starting from 0, that returns Just if:

   0 <= n < length bs
   

8. indexMaybe :: ByteString -> Int -> Maybe Char

   bytestring	Data.ByteString.Char8

   O(1) ByteString index, starting from 0, that returns Just if:

   0 <= n < length bs
   

9. indexMaybe :: ByteString -> Int64 -> Maybe Word8

   bytestring	Data.ByteString.Lazy

   O(c) ByteString index, starting from 0, that returns Just if:

   0 <= n < length bs
   

10. indexMaybe :: ByteString -> Int64 -> Maybe Char

    bytestring	Data.ByteString.Lazy.Char8

    O(1) ByteString index, starting from 0, that returns Just if:

    0 <= n < length bs
    

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