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class Enum a

base Prelude

Class Enum defines operations on sequentially ordered types. The enumFrom... methods are used in Haskell's translation of arithmetic sequences. Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details. For any type that is an instance of class Bounded as well as Enum, the following should hold:
- The calls succ maxBound and pred minBound should result in a runtime error.
- fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
- enumFrom and enumFromThen should be defined with an implicit bound, thus:
```
enumFrom     x   = enumFromTo     x maxBound
enumFromThen x y = enumFromThenTo x y bound
where
bound | fromEnum y >= fromEnum x = maxBound
| otherwise                = minBound
```
module GHC.Enum

The Enum and Bounded classes.
class Enum a

base GHC.Enum

Class Enum defines operations on sequentially ordered types. The enumFrom... methods are used in Haskell's translation of arithmetic sequences. Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details. For any type that is an instance of class Bounded as well as Enum, the following should hold:
- The calls succ maxBound and pred minBound should result in a runtime error.
- fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
- enumFrom and enumFromThen should be defined with an implicit bound, thus:
```
enumFrom     x   = enumFromTo     x maxBound
enumFromThen x y = enumFromThenTo x y bound
where
bound | fromEnum y >= fromEnum x = maxBound
| otherwise                = minBound
```
class Enum a

hedgehog Hedgehog.Internal.Prelude

Class Enum defines operations on sequentially ordered types. The enumFrom... methods are used in Haskell's translation of arithmetic sequences. Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details. For any type that is an instance of class Bounded as well as Enum, the following should hold:
- The calls succ maxBound and pred minBound should result in a runtime error.
- fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
- enumFrom and enumFromThen should be defined with an implicit bound, thus:
```
enumFrom     x   = enumFromTo     x maxBound
enumFromThen x y = enumFromThenTo x y bound
where
bound | fromEnum y >= fromEnum x = maxBound
| otherwise                = minBound
```

base	Prelude

base	GHC.Enum

hedgehog	Hedgehog.Internal.Prelude

Implementations of Ix methods in terms of Enum methods. For a type T of class Enum you can easily define an Ix instance by copying the following code into your module:

import qualified Data.Ix.Enum as IxEnum

instance Ix T where
range           = IxEnum.range
index           = IxEnum.index
inRange         = IxEnum.inRange
rangeSize       = IxEnum.rangeSize
unsafeIndex     = IxEnum.unsafeIndex
unsafeRangeSize = IxEnum.unsafeRangeSize

class Enum a

haskell-gi-base Data.GI.Base.ShortPrelude

Class Enum defines operations on sequentially ordered types. The enumFrom... methods are used in Haskell's translation of arithmetic sequences. Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details. For any type that is an instance of class Bounded as well as Enum, the following should hold:
- The calls succ maxBound and pred minBound should result in a runtime error.
- fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
- enumFrom and enumFromThen should be defined with an implicit bound, thus:
```
enumFrom     x   = enumFromTo     x maxBound
enumFromThen x y = enumFromThenTo x y bound
where
bound | fromEnum y >= fromEnum x = maxBound
| otherwise                = minBound
```
module GHC.Enum

No documentation available.
module Data.GI.GIR.Enum

Parsing of Enums.
module Generics.Deriving.Enum

No documentation available.
class Enum a

rio RIO.Prelude.Types

Class Enum defines operations on sequentially ordered types. The enumFrom... methods are used in Haskell's translation of arithmetic sequences. Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details. For any type that is an instance of class Bounded as well as Enum, the following should hold:
- The calls succ maxBound and pred minBound should result in a runtime error.
- fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
- enumFrom and enumFromThen should be defined with an implicit bound, thus:
```
enumFrom     x   = enumFromTo     x maxBound
enumFromThen x y = enumFromThenTo x y bound
where
bound | fromEnum y >= fromEnum x = maxBound
| otherwise                = minBound
```

haskell-gi-base	Data.GI.Base.ShortPrelude

rio	RIO.Prelude.Types

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