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

    classy-prelude ClassyPrelude

    Used in Haskell's translation of [n,n'..] with [n,n'..] = enumFromThen n n', a possible implementation being enumFromThen n n' = n : n' : worker (f x) (f x n'), worker s v = v : worker s (s v), x = fromEnum n' - fromEnum n and 

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

    Examples

    • enumFromThen 4 6 :: [Integer] = [4,6,8,10...]
    • enumFromThen 6 2 :: [Int] = [6,2,-2,-6,...,minBound ::
Int]

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

    classy-prelude ClassyPrelude

    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] = []

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

    classy-prelude ClassyPrelude

    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] = []

  4. enumsFrom :: Enum a => a -> Unfoldr a

    deferred-folds DeferredFolds.Unfoldr

    Ascending infinite stream of enums starting from the one specified

  5. enumsInRange :: (Enum a, Ord a) => a -> a -> Unfoldr a

    deferred-folds DeferredFolds.Unfoldr

    Enums in the specified inclusive range

  6. package enumset

    Sets of enumeration values represented by machine words With this package you can create a type safe interface to flag sets. It is intended for interfacing to C libraries via FFI, where Word8, Word16, or Word32 types are commonly used to store bit vectors. E.g. the type EnumSet Word16 Ordering represents a flag set stored in a Word16 that supports the flags LT, EQ, GT. This package is similar to the bitset package and the Data.Edison.Coll.EnumSet module in the edison package, however our implementation allows you to choose the embedding type and thus the maximum size of the set. See also data-flags and Data.EnumSet in enummapset.

  7. enumClassKey :: Unique

    ghc-lib-parser GHC.Builtin.Names

    No documentation available.

  8. enumClassName :: Name

    ghc-lib-parser GHC.Builtin.Names

    No documentation available.

  9. enumFromClassOpKey :: Unique

    ghc-lib-parser GHC.Builtin.Names

    No documentation available.

  10. enumFromName :: Name

    ghc-lib-parser GHC.Builtin.Names

    No documentation available.

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