Hoogle Search

Within LTS Haskell 24.32 (ghc-9.10.3)

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

Exact lookup

1. coarbitraryEnum :: Enum a => a -> Gen b -> Gen b

   tasty-quickcheck	Test.Tasty.QuickCheck

   A coarbitrary implementation for enums.

2. functionBoundedEnum :: (Eq a, Bounded a, Enum a) => (a -> b) -> a :-> b

   tasty-quickcheck	Test.Tasty.QuickCheck

   Provides a Function instance for types with Bounded and Enum. Use only for small types (i.e. not integers): creates the list [minBound..maxBound]!

3. shrinkBoundedEnum :: (Bounded a, Enum a, Eq a) => a -> [a]

   tasty-quickcheck	Test.Tasty.QuickCheck

   Shrink an element of a bounded enumeration.

   Example

   data MyEnum = E0 | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | E9
   deriving (Bounded, Enum, Eq, Ord, Show)
   

   >>> shrinkBoundedEnum E9
   [E0,E5,E7,E8]
   

   >>> shrinkBoundedEnum E5
   [E0,E3,E4]
   

   >>> shrinkBoundedEnum E0
   []
   

4. uniformEnumM :: (Enum a, Bounded a, StatefulGen g m) => g -> m a

   random	System.Random.Stateful

   Generates uniformly distributed Enum. One can use it to define a Uniform instance:

   data Colors = Red | Green | Blue deriving (Enum, Bounded)
   instance Uniform Colors where uniformM = uniformEnumM
   

5. uniformEnumRM :: (Enum a, StatefulGen g m) => (a, a) -> g -> m a

   random	System.Random.Stateful

   Generates uniformly distributed Enum in the given range. One can use it to define a UniformRange instance:

   data Colors = Red | Green | Blue deriving (Enum)
   instance UniformRange Colors where
   uniformRM = uniformEnumRM
   inInRange (lo, hi) x = isInRange (fromEnum lo, fromEnum hi) (fromEnum x)
   

6. tagToEnum# :: Int# -> a

   ghc-prim	GHC.Prim

   No documentation available.

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

   hedgehog	Hedgehog.Internal.Prelude

   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.

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

   hedgehog	Hedgehog.Internal.Prelude

   Convert from an Int.

9. updateNumCapabilities :: WorkerCount -> IO ()

   hedgehog	Hedgehog.Internal.Queue

   Update the number of capabilities but never set it lower than it already is.

10. toEnumDef :: (Enum a, Bounded a) => a -> Int -> a

    safe	Safe

    No documentation available.

Page 94 of many | Previous | Next