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Within LTS Haskell 24.34 (ghc-9.10.3)

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

    QuickCheck Test.QuickCheck.Arbitrary

    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
    []
    

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

    QuickCheck Test.QuickCheck.Function

    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. chooseEnum :: Enum a => (a, a) -> Gen a

    QuickCheck Test.QuickCheck.Gen

    A fast implementation of choose for enumerated types.

  4. data ParseNumericPadding

    time Data.Time.Format.Internal

    No documentation available.

  5. arbitraryBoundedEnum :: (Bounded a, Enum a) => Gen a

    tasty-quickcheck Test.Tasty.QuickCheck

    Generates an element of a bounded enumeration.

  6. chooseEnum :: Enum a => (a, a) -> Gen a

    tasty-quickcheck Test.Tasty.QuickCheck

    A fast implementation of choose for enumerated types.

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

    tasty-quickcheck Test.Tasty.QuickCheck

    A coarbitrary implementation for enums.

  8. 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]!

  9. 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
    []
    

  10. 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
    

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