Hoogle Search

Within LTS Haskell 24.33 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. enumFromThenTo :: Enum a => a -> a -> a -> [a]

   base	GHC.Enum

   Used in Haskell's translation of [n,n'..m] with [n,n'..m] = enumFromThenTo n n' m, a possible implementation being enumFromThenTo n n' m = worker (f x) (c x) n m, x = fromEnum n' - fromEnum n, c x = bool (>=) ((x 0)

   f n y
   | n > 0 = f (n - 1) (succ y)
   | n < 0 = f (n + 1) (pred y)
   | otherwise = y
   
   

   and

   worker s c v m
   | c v m = v : worker s c (s v) m
   | otherwise = []
   
   

   Examples

   • enumFromThenTo 4 2 -6 :: [Integer] =
     [4,2,0,-2,-4,-6]

   • enumFromThenTo 6 8 2 :: [Int] = []

2. enumFromTo :: Enum a => a -> a -> [a]

   base	GHC.Enum

   Used in Haskell's translation of [n..m] with [n..m] = enumFromTo n m, a possible implementation being

   enumFromTo n m
   | n <= m = n : enumFromTo (succ n) m
   | otherwise = []
   
   

   Examples

   • enumFromTo 6 10 :: [Int] = [6,7,8,9,10]

   • enumFromTo 42 1 :: [Integer] = []

3. fromEnum :: Enum a => a -> Int

   base	GHC.Enum

   Convert to an Int. It is implementation-dependent what fromEnum returns when applied to a value that is too large to fit in an Int.

4. fromEnumError :: Show a => String -> a -> b

   base	GHC.Enum

   No documentation available.

5. toEnum :: Enum a => Int -> a

   base	GHC.Enum

   Convert from an Int.

6. toEnumError :: Show a => String -> Int -> (a, a) -> b

   base	GHC.Enum

   No documentation available.

7. tagToEnum# :: Int# -> a

   base	GHC.Exts

   No documentation available.

8. signumInteger :: Integer -> Integer

   base	GHC.Integer

   Used to implement signum for the Num typeclass. This gives 1 for a positive integer, and -1 for a negative integer.

   Example

   >>> signumInteger 5
   1
   

   >>> signum 5
   1
   

9. signumNatural :: Natural -> Natural

   base	GHC.Natural

   No documentation available.

10. integerSignum :: Integer -> Integer

    base	GHC.Num

    No documentation available.

Page 143 of many | Previous | Next