Safe Haskell	None
Language	Haskell2010

Data.THGen.Enum

Description

Generate enumeration data types with prefixed constructors but unprefixed Show and Read instances.

enumGenerate $ EnumDesc "Animal" ["Cat", "Dog", "Gopher"]

produces

data Animal = AnimalCat | AnimalDog | AnimalGopher

yet Read and Show parse and print regular values:

show AnimalDog == "Dog"
(read "Cat" :: Animal) == AnimalCat

Documentation

Constructors

Exhaustive
NonExhaustive

Instances

Eq Exhaustiveness #
Instance details Defined in Data.THGen.Enum Methods (==) :: Exhaustiveness -> Exhaustiveness -> Bool # (/=) :: Exhaustiveness -> Exhaustiveness -> Bool #
Ord Exhaustiveness #
Instance details Defined in Data.THGen.Enum Methods compare :: Exhaustiveness -> Exhaustiveness -> Ordering # (<) :: Exhaustiveness -> Exhaustiveness -> Bool # (<=) :: Exhaustiveness -> Exhaustiveness -> Bool # (>) :: Exhaustiveness -> Exhaustiveness -> Bool # (>=) :: Exhaustiveness -> Exhaustiveness -> Bool # max :: Exhaustiveness -> Exhaustiveness -> Exhaustiveness # min :: Exhaustiveness -> Exhaustiveness -> Exhaustiveness #
Show Exhaustiveness #
Instance details Defined in Data.THGen.Enum Methods showsPrec :: Int -> Exhaustiveness -> ShowS # show :: Exhaustiveness -> String # showList :: [Exhaustiveness] -> ShowS #

Constructors