ghc-lib-parser-9.6.3.20231121: The GHC API, decoupled from GHC versions
Safe HaskellSafe-Inferred
LanguageHaskell2010

GHC.Prelude.Basic

Description

Custom minimal GHC Prelude

This module serves as a replacement for the Prelude module and abstracts over differences between the bootstrapping GHC version, and may also provide a common default vocabulary.

Synopsis

Documentation

(++) :: [a] -> [a] -> [a] infixr 5 #

Append two lists, i.e.,

[x1, ..., xm] ++ [y1, ..., yn] == [x1, ..., xm, y1, ..., yn]
[x1, ..., xm] ++ [y1, ...] == [x1, ..., xm, y1, ...]

If the first list is not finite, the result is the first list.

seq :: forall {r :: RuntimeRep} a (b :: TYPE r). a -> b -> b infixr 0 #

The value of seq a b is bottom if a is bottom, and otherwise equal to b. In other words, it evaluates the first argument a to weak head normal form (WHNF). seq is usually introduced to improve performance by avoiding unneeded laziness.

A note on evaluation order: the expression seq a b does not guarantee that a will be evaluated before b. The only guarantee given by seq is that the both a and b will be evaluated before seq returns a value. In particular, this means that b may be evaluated before a. If you need to guarantee a specific order of evaluation, you must use the function pseq from the "parallel" package.

filter :: (a -> Bool) -> [a] -> [a] #

\(\mathcal{O}(n)\). filter, applied to a predicate and a list, returns the list of those elements that satisfy the predicate; i.e.,

filter p xs = [ x | x <- xs, p x]
>>> filter odd [1, 2, 3]
[1,3]

zip :: [a] -> [b] -> [(a, b)] #

\(\mathcal{O}(\min(m,n))\). zip takes two lists and returns a list of corresponding pairs.

>>> zip [1, 2] ['a', 'b']
[(1,'a'),(2,'b')]

If one input list is shorter than the other, excess elements of the longer list are discarded, even if one of the lists is infinite:

>>> zip [1] ['a', 'b']
[(1,'a')]
>>> zip [1, 2] ['a']
[(1,'a')]
>>> zip [] [1..]
[]
>>> zip [1..] []
[]

zip is right-lazy:

>>> zip [] undefined
[]
>>> zip undefined []
*** Exception: Prelude.undefined
...

zip is capable of list fusion, but it is restricted to its first list argument and its resulting list.

print :: Show a => a -> IO () #

The print function outputs a value of any printable type to the standard output device. Printable types are those that are instances of class Show; print converts values to strings for output using the show operation and adds a newline.

For example, a program to print the first 20 integers and their powers of 2 could be written as:

main = print ([(n, 2^n) | n <- [0..19]])

fst :: (a, b) -> a #

Extract the first component of a pair.

snd :: (a, b) -> b #

Extract the second component of a pair.

otherwise :: Bool #

otherwise is defined as the value True. It helps to make guards more readable. eg.

 f x | x < 0     = ...
     | otherwise = ...

map :: (a -> b) -> [a] -> [b] #

\(\mathcal{O}(n)\). map f xs is the list obtained by applying f to each element of xs, i.e.,

map f [x1, x2, ..., xn] == [f x1, f x2, ..., f xn]
map f [x1, x2, ...] == [f x1, f x2, ...]
>>> map (+1) [1, 2, 3]
[2,3,4]

($) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b infixr 0 #

Application operator. This operator is redundant, since ordinary application (f x) means the same as (f $ x). However, $ has low, right-associative binding precedence, so it sometimes allows parentheses to be omitted; for example:

f $ g $ h x  =  f (g (h x))

It is also useful in higher-order situations, such as map ($ 0) xs, or zipWith ($) fs xs.

Note that ($) is levity-polymorphic in its result type, so that foo $ True where foo :: Bool -> Int# is well-typed.

fromIntegral :: (Integral a, Num b) => a -> b #

general coercion from integral types

realToFrac :: (Real a, Fractional b) => a -> b #

general coercion to fractional types

class Bounded a where #

The Bounded class is used to name the upper and lower limits of a type. Ord is not a superclass of Bounded since types that are not totally ordered may also have upper and lower bounds.

The Bounded class may be derived for any enumeration type; minBound is the first constructor listed in the data declaration and maxBound is the last. Bounded may also be derived for single-constructor datatypes whose constituent types are in Bounded.

Methods

minBound :: a #

maxBound :: a #

Instances

Instances details
Bounded All

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Methods

minBound :: All #

maxBound :: All #

Bounded Any

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Methods

minBound :: Any #

maxBound :: Any #

Bounded CBool 
Instance details

Defined in Foreign.C.Types

Bounded CChar 
Instance details

Defined in Foreign.C.Types

Bounded CInt 
Instance details

Defined in Foreign.C.Types

Bounded CIntMax 
Instance details

Defined in Foreign.C.Types

Bounded CIntPtr 
Instance details

Defined in Foreign.C.Types

Bounded CLLong 
Instance details

Defined in Foreign.C.Types

Bounded CLong 
Instance details

Defined in Foreign.C.Types

Bounded CPtrdiff 
Instance details

Defined in Foreign.C.Types

Bounded CSChar 
Instance details

Defined in Foreign.C.Types

Bounded CShort 
Instance details

Defined in Foreign.C.Types

Bounded CSigAtomic 
Instance details

Defined in Foreign.C.Types

Bounded CSize 
Instance details

Defined in Foreign.C.Types

Bounded CUChar 
Instance details

Defined in Foreign.C.Types

Bounded CUInt 
Instance details

Defined in Foreign.C.Types

Bounded CUIntMax 
Instance details

Defined in Foreign.C.Types

Bounded CUIntPtr 
Instance details

Defined in Foreign.C.Types

Bounded CULLong 
Instance details

Defined in Foreign.C.Types

Bounded CULong 
Instance details

Defined in Foreign.C.Types

Bounded CUShort 
Instance details

Defined in Foreign.C.Types

Bounded CWchar 
Instance details

Defined in Foreign.C.Types

Bounded IntPtr 
Instance details

Defined in Foreign.Ptr

Bounded WordPtr 
Instance details

Defined in Foreign.Ptr

Bounded ByteOrder

Since: base-4.11.0.0

Instance details

Defined in GHC.ByteOrder

Bounded Associativity

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Bounded DecidedStrictness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Bounded SourceStrictness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Bounded SourceUnpackedness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Bounded Int16

Since: base-2.1

Instance details

Defined in GHC.Int

Bounded Int32

Since: base-2.1

Instance details

Defined in GHC.Int

Bounded Int64

Since: base-2.1

Instance details

Defined in GHC.Int

Bounded Int8

Since: base-2.1

Instance details

Defined in GHC.Int

Bounded GeneralCategory

Since: base-2.1

Instance details

Defined in GHC.Unicode

Bounded Word16

Since: base-2.1

Instance details

Defined in GHC.Word

Bounded Word32

Since: base-2.1

Instance details

Defined in GHC.Word

Bounded Word64

Since: base-2.1

Instance details

Defined in GHC.Word

Bounded Word8

Since: base-2.1

Instance details

Defined in GHC.Word

Bounded CBlkCnt 
Instance details

Defined in System.Posix.Types

Bounded CBlkSize 
Instance details

Defined in System.Posix.Types

Bounded CClockId 
Instance details

Defined in System.Posix.Types

Bounded CDev 
Instance details

Defined in System.Posix.Types

Bounded CFsBlkCnt 
Instance details

Defined in System.Posix.Types

Bounded CFsFilCnt 
Instance details

Defined in System.Posix.Types

Bounded CGid 
Instance details

Defined in System.Posix.Types

Bounded CId 
Instance details

Defined in System.Posix.Types

Methods

minBound :: CId #

maxBound :: CId #

Bounded CIno 
Instance details

Defined in System.Posix.Types

Bounded CKey 
Instance details

Defined in System.Posix.Types

Bounded CMode 
Instance details

Defined in System.Posix.Types

Bounded CNfds 
Instance details

Defined in System.Posix.Types

Bounded CNlink 
Instance details

Defined in System.Posix.Types

Bounded COff 
Instance details

Defined in System.Posix.Types

Bounded CPid 
Instance details

Defined in System.Posix.Types

Bounded CRLim 
Instance details

Defined in System.Posix.Types

Bounded CSocklen 
Instance details

Defined in System.Posix.Types

Bounded CSsize 
Instance details

Defined in System.Posix.Types

Bounded CTcflag 
Instance details

Defined in System.Posix.Types

Bounded CUid 
Instance details

Defined in System.Posix.Types

Bounded Fd 
Instance details

Defined in System.Posix.Types

Methods

minBound :: Fd #

maxBound :: Fd #

Bounded FileType 
Instance details

Defined in System.Directory.Internal.Common

Bounded XdgDirectory 
Instance details

Defined in System.Directory.Internal.Common

Bounded XdgDirectoryList 
Instance details

Defined in System.Directory.Internal.Common

Bounded Extension 
Instance details

Defined in GHC.LanguageExtensions.Type

Bounded OverridingBool Source #

Since: 9.4.1

Instance details

Defined in GHC.Data.Bool

Bounded Language Source # 
Instance details

Defined in GHC.Driver.Flags

Bounded Extension Source # 
Instance details

Defined in GHC.LanguageExtensions.Type

Bounded Ordering

Since: base-2.1

Instance details

Defined in GHC.Enum

Bounded ()

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: () #

maxBound :: () #

Bounded Bool

Since: base-2.1

Instance details

Defined in GHC.Enum

Bounded Char

Since: base-2.1

Instance details

Defined in GHC.Enum

Bounded Int

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: Int #

maxBound :: Int #

Bounded Levity

Since: base-4.16.0.0

Instance details

Defined in GHC.Enum

Bounded VecCount

Since: base-4.10.0.0

Instance details

Defined in GHC.Enum

Bounded VecElem

Since: base-4.10.0.0

Instance details

Defined in GHC.Enum

Bounded Word

Since: base-2.1

Instance details

Defined in GHC.Enum

Bounded a => Bounded (And a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

minBound :: And a #

maxBound :: And a #

Bounded a => Bounded (Iff a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

minBound :: Iff a #

maxBound :: Iff a #

Bounded a => Bounded (Ior a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

minBound :: Ior a #

maxBound :: Ior a #

Bounded a => Bounded (Xor a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

minBound :: Xor a #

maxBound :: Xor a #

Bounded a => Bounded (Identity a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Identity

Bounded a => Bounded (Down a)

Swaps minBound and maxBound of the underlying type.

Since: base-4.14.0.0

Instance details

Defined in Data.Ord

Methods

minBound :: Down a #

maxBound :: Down a #

Bounded a => Bounded (First a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

minBound :: First a #

maxBound :: First a #

Bounded a => Bounded (Last a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

minBound :: Last a #

maxBound :: Last a #

Bounded a => Bounded (Max a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

minBound :: Max a #

maxBound :: Max a #

Bounded a => Bounded (Min a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

minBound :: Min a #

maxBound :: Min a #

Bounded m => Bounded (WrappedMonoid m)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Bounded a => Bounded (Dual a)

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Methods

minBound :: Dual a #

maxBound :: Dual a #

Bounded a => Bounded (Product a)

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Bounded a => Bounded (Sum a)

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Methods

minBound :: Sum a #

maxBound :: Sum a #

Bounded a => Bounded (a) 
Instance details

Defined in GHC.Enum

Methods

minBound :: (a) #

maxBound :: (a) #

Bounded (Proxy t)

Since: base-4.7.0.0

Instance details

Defined in Data.Proxy

Methods

minBound :: Proxy t #

maxBound :: Proxy t #

Bounded (Bin a) Source # 
Instance details

Defined in GHC.Utils.Binary

Methods

minBound :: Bin a #

maxBound :: Bin a #

(Bounded a, Bounded b) => Bounded (a, b)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b) #

maxBound :: (a, b) #

Bounded a => Bounded (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

minBound :: Const a b #

maxBound :: Const a b #

(Applicative f, Bounded a) => Bounded (Ap f a)

Since: base-4.12.0.0

Instance details

Defined in Data.Monoid

Methods

minBound :: Ap f a #

maxBound :: Ap f a #

Coercible a b => Bounded (Coercion a b)

Since: base-4.7.0.0

Instance details

Defined in Data.Type.Coercion

Methods

minBound :: Coercion a b #

maxBound :: Coercion a b #

a ~ b => Bounded (a :~: b)

Since: base-4.7.0.0

Instance details

Defined in Data.Type.Equality

Methods

minBound :: a :~: b #

maxBound :: a :~: b #

(Bounded a, Bounded b, Bounded c) => Bounded (a, b, c)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c) #

maxBound :: (a, b, c) #

a ~~ b => Bounded (a :~~: b)

Since: base-4.10.0.0

Instance details

Defined in Data.Type.Equality

Methods

minBound :: a :~~: b #

maxBound :: a :~~: b #

(Bounded a, Bounded b, Bounded c, Bounded d) => Bounded (a, b, c, d)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d) #

maxBound :: (a, b, c, d) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e) => Bounded (a, b, c, d, e)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e) #

maxBound :: (a, b, c, d, e) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f) => Bounded (a, b, c, d, e, f)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f) #

maxBound :: (a, b, c, d, e, f) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g) => Bounded (a, b, c, d, e, f, g)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g) #

maxBound :: (a, b, c, d, e, f, g) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h) => Bounded (a, b, c, d, e, f, g, h)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h) #

maxBound :: (a, b, c, d, e, f, g, h) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i) => Bounded (a, b, c, d, e, f, g, h, i)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i) #

maxBound :: (a, b, c, d, e, f, g, h, i) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j) => Bounded (a, b, c, d, e, f, g, h, i, j)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i, j) #

maxBound :: (a, b, c, d, e, f, g, h, i, j) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k) => Bounded (a, b, c, d, e, f, g, h, i, j, k)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i, j, k) #

maxBound :: (a, b, c, d, e, f, g, h, i, j, k) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i, j, k, l) #

maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l, Bounded m) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l, m)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m) #

maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l, Bounded m, Bounded n) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l, m, n)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) #

maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n) #

(Bounded a, Bounded b, Bounded c, Bounded d, Bounded e, Bounded f, Bounded g, Bounded h, Bounded i, Bounded j, Bounded k, Bounded l, Bounded m, Bounded n, Bounded o) => Bounded (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

minBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) #

maxBound :: (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) #

class Enum a where #

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:

   enumFrom     x   = enumFromTo     x maxBound
   enumFromThen x y = enumFromThenTo x y bound
     where
       bound | fromEnum y >= fromEnum x = maxBound
             | otherwise                = minBound

Minimal complete definition

toEnum, fromEnum

Methods

succ :: a -> a #

the successor of a value. For numeric types, succ adds 1.

pred :: a -> a #

the predecessor of a value. For numeric types, pred subtracts 1.

toEnum :: Int -> a #

Convert from an Int.

fromEnum :: a -> Int #

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.

enumFrom :: a -> [a] #

Used in Haskell's translation of [n..] with [n..] = enumFrom n, a possible implementation being enumFrom n = n : enumFrom (succ n). For example:

  • enumFrom 4 :: [Integer] = [4,5,6,7,...]
  • enumFrom 6 :: [Int] = [6,7,8,9,...,maxBound :: Int]

enumFromThen :: a -> a -> [a] #

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 For example:

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

enumFromTo :: a -> a -> [a] #

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 = []. For example:

  • enumFromTo 6 10 :: [Int] = [6,7,8,9,10]
  • enumFromTo 42 1 :: [Integer] = []

enumFromThenTo :: a -> a -> a -> [a] #

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 = [] For example:

  • enumFromThenTo 4 2 -6 :: [Integer] = [4,2,0,-2,-4,-6]
  • enumFromThenTo 6 8 2 :: [Int] = []

Instances

Instances details
Enum CBool 
Instance details

Defined in Foreign.C.Types

Enum CChar 
Instance details

Defined in Foreign.C.Types

Enum CClock 
Instance details

Defined in Foreign.C.Types

Enum CDouble 
Instance details

Defined in Foreign.C.Types

Enum CFloat 
Instance details

Defined in Foreign.C.Types

Enum CInt 
Instance details

Defined in Foreign.C.Types

Methods

succ :: CInt -> CInt #

pred :: CInt -> CInt #

toEnum :: Int -> CInt #

fromEnum :: CInt -> Int #

enumFrom :: CInt -> [CInt] #

enumFromThen :: CInt -> CInt -> [CInt] #

enumFromTo :: CInt -> CInt -> [CInt] #

enumFromThenTo :: CInt -> CInt -> CInt -> [CInt] #

Enum CIntMax 
Instance details

Defined in Foreign.C.Types

Enum CIntPtr 
Instance details

Defined in Foreign.C.Types

Enum CLLong 
Instance details

Defined in Foreign.C.Types

Enum CLong 
Instance details

Defined in Foreign.C.Types

Enum CPtrdiff 
Instance details

Defined in Foreign.C.Types

Enum CSChar 
Instance details

Defined in Foreign.C.Types

Enum CSUSeconds 
Instance details

Defined in Foreign.C.Types

Enum CShort 
Instance details

Defined in Foreign.C.Types

Enum CSigAtomic 
Instance details

Defined in Foreign.C.Types

Enum CSize 
Instance details

Defined in Foreign.C.Types

Enum CTime 
Instance details

Defined in Foreign.C.Types

Enum CUChar 
Instance details

Defined in Foreign.C.Types

Enum CUInt 
Instance details

Defined in Foreign.C.Types

Enum CUIntMax 
Instance details

Defined in Foreign.C.Types

Enum CUIntPtr 
Instance details

Defined in Foreign.C.Types

Enum CULLong 
Instance details

Defined in Foreign.C.Types

Enum CULong 
Instance details

Defined in Foreign.C.Types

Enum CUSeconds 
Instance details

Defined in Foreign.C.Types

Enum CUShort 
Instance details

Defined in Foreign.C.Types

Enum CWchar 
Instance details

Defined in Foreign.C.Types

Enum IntPtr 
Instance details

Defined in Foreign.Ptr

Enum WordPtr 
Instance details

Defined in Foreign.Ptr

Enum ByteOrder

Since: base-4.11.0.0

Instance details

Defined in GHC.ByteOrder

Enum Associativity

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Enum DecidedStrictness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Enum SourceStrictness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Enum SourceUnpackedness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Enum SeekMode

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Device

Enum IOMode

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.IOMode

Enum Int16

Since: base-2.1

Instance details

Defined in GHC.Int

Enum Int32

Since: base-2.1

Instance details

Defined in GHC.Int

Enum Int64

Since: base-2.1

Instance details

Defined in GHC.Int

Enum Int8

Since: base-2.1

Instance details

Defined in GHC.Int

Methods

succ :: Int8 -> Int8 #

pred :: Int8 -> Int8 #

toEnum :: Int -> Int8 #

fromEnum :: Int8 -> Int #

enumFrom :: Int8 -> [Int8] #

enumFromThen :: Int8 -> Int8 -> [Int8] #

enumFromTo :: Int8 -> Int8 -> [Int8] #

enumFromThenTo :: Int8 -> Int8 -> Int8 -> [Int8] #

Enum DoCostCentres

Since: base-4.8.0.0

Instance details

Defined in GHC.RTS.Flags

Enum DoHeapProfile

Since: base-4.8.0.0

Instance details

Defined in GHC.RTS.Flags

Enum DoTrace

Since: base-4.8.0.0

Instance details

Defined in GHC.RTS.Flags

Enum GiveGCStats

Since: base-4.8.0.0

Instance details

Defined in GHC.RTS.Flags

Enum IoSubSystem

Since: base-4.9.0.0

Instance details

Defined in GHC.RTS.Flags

Enum GeneralCategory

Since: base-2.1

Instance details

Defined in GHC.Unicode

Enum Word16

Since: base-2.1

Instance details

Defined in GHC.Word

Enum Word32

Since: base-2.1

Instance details

Defined in GHC.Word

Enum Word64

Since: base-2.1

Instance details

Defined in GHC.Word

Enum Word8

Since: base-2.1

Instance details

Defined in GHC.Word

Enum CBlkCnt 
Instance details

Defined in System.Posix.Types

Enum CBlkSize 
Instance details

Defined in System.Posix.Types

Enum CCc 
Instance details

Defined in System.Posix.Types

Methods

succ :: CCc -> CCc #

pred :: CCc -> CCc #

toEnum :: Int -> CCc #

fromEnum :: CCc -> Int #

enumFrom :: CCc -> [CCc] #

enumFromThen :: CCc -> CCc -> [CCc] #

enumFromTo :: CCc -> CCc -> [CCc] #

enumFromThenTo :: CCc -> CCc -> CCc -> [CCc] #

Enum CClockId 
Instance details

Defined in System.Posix.Types

Enum CDev 
Instance details

Defined in System.Posix.Types

Methods

succ :: CDev -> CDev #

pred :: CDev -> CDev #

toEnum :: Int -> CDev #

fromEnum :: CDev -> Int #

enumFrom :: CDev -> [CDev] #

enumFromThen :: CDev -> CDev -> [CDev] #

enumFromTo :: CDev -> CDev -> [CDev] #

enumFromThenTo :: CDev -> CDev -> CDev -> [CDev] #

Enum CFsBlkCnt 
Instance details

Defined in System.Posix.Types

Enum CFsFilCnt 
Instance details

Defined in System.Posix.Types

Enum CGid 
Instance details

Defined in System.Posix.Types

Methods

succ :: CGid -> CGid #

pred :: CGid -> CGid #

toEnum :: Int -> CGid #

fromEnum :: CGid -> Int #

enumFrom :: CGid -> [CGid] #

enumFromThen :: CGid -> CGid -> [CGid] #

enumFromTo :: CGid -> CGid -> [CGid] #

enumFromThenTo :: CGid -> CGid -> CGid -> [CGid] #

Enum CId 
Instance details

Defined in System.Posix.Types

Methods

succ :: CId -> CId #

pred :: CId -> CId #

toEnum :: Int -> CId #

fromEnum :: CId -> Int #

enumFrom :: CId -> [CId] #

enumFromThen :: CId -> CId -> [CId] #

enumFromTo :: CId -> CId -> [CId] #

enumFromThenTo :: CId -> CId -> CId -> [CId] #

Enum CIno 
Instance details

Defined in System.Posix.Types

Methods

succ :: CIno -> CIno #

pred :: CIno -> CIno #

toEnum :: Int -> CIno #

fromEnum :: CIno -> Int #

enumFrom :: CIno -> [CIno] #

enumFromThen :: CIno -> CIno -> [CIno] #

enumFromTo :: CIno -> CIno -> [CIno] #

enumFromThenTo :: CIno -> CIno -> CIno -> [CIno] #

Enum CKey 
Instance details

Defined in System.Posix.Types

Methods

succ :: CKey -> CKey #

pred :: CKey -> CKey #

toEnum :: Int -> CKey #

fromEnum :: CKey -> Int #

enumFrom :: CKey -> [CKey] #

enumFromThen :: CKey -> CKey -> [CKey] #

enumFromTo :: CKey -> CKey -> [CKey] #

enumFromThenTo :: CKey -> CKey -> CKey -> [CKey] #

Enum CMode 
Instance details

Defined in System.Posix.Types

Enum CNfds 
Instance details

Defined in System.Posix.Types

Enum CNlink 
Instance details

Defined in System.Posix.Types

Enum COff 
Instance details

Defined in System.Posix.Types

Methods

succ :: COff -> COff #

pred :: COff -> COff #

toEnum :: Int -> COff #

fromEnum :: COff -> Int #

enumFrom :: COff -> [COff] #

enumFromThen :: COff -> COff -> [COff] #

enumFromTo :: COff -> COff -> [COff] #

enumFromThenTo :: COff -> COff -> COff -> [COff] #

Enum CPid 
Instance details

Defined in System.Posix.Types

Methods

succ :: CPid -> CPid #

pred :: CPid -> CPid #

toEnum :: Int -> CPid #

fromEnum :: CPid -> Int #

enumFrom :: CPid -> [CPid] #

enumFromThen :: CPid -> CPid -> [CPid] #

enumFromTo :: CPid -> CPid -> [CPid] #

enumFromThenTo :: CPid -> CPid -> CPid -> [CPid] #

Enum CRLim 
Instance details

Defined in System.Posix.Types

Enum CSocklen 
Instance details

Defined in System.Posix.Types

Enum CSpeed 
Instance details

Defined in System.Posix.Types

Enum CSsize 
Instance details

Defined in System.Posix.Types

Enum CTcflag 
Instance details

Defined in System.Posix.Types

Enum CUid 
Instance details

Defined in System.Posix.Types

Methods

succ :: CUid -> CUid #

pred :: CUid -> CUid #

toEnum :: Int -> CUid #

fromEnum :: CUid -> Int #

enumFrom :: CUid -> [CUid] #

enumFromThen :: CUid -> CUid -> [CUid] #

enumFromTo :: CUid -> CUid -> [CUid] #

enumFromThenTo :: CUid -> CUid -> CUid -> [CUid] #

Enum Fd 
Instance details

Defined in System.Posix.Types

Methods

succ :: Fd -> Fd #

pred :: Fd -> Fd #

toEnum :: Int -> Fd #

fromEnum :: Fd -> Int #

enumFrom :: Fd -> [Fd] #

enumFromThen :: Fd -> Fd -> [Fd] #

enumFromTo :: Fd -> Fd -> [Fd] #

enumFromThenTo :: Fd -> Fd -> Fd -> [Fd] #

Enum FileType 
Instance details

Defined in System.Directory.Internal.Common

Enum XdgDirectory 
Instance details

Defined in System.Directory.Internal.Common

Enum XdgDirectoryList 
Instance details

Defined in System.Directory.Internal.Common

Enum Extension 
Instance details

Defined in GHC.LanguageExtensions.Type

Enum ByteOff Source # 
Instance details

Defined in GHC.ByteCode.Types

Enum RegBitmap Source # 
Instance details

Defined in GHC.ByteCode.Types

Enum WordOff Source # 
Instance details

Defined in GHC.ByteCode.Types

Enum PrimElemRep Source # 
Instance details

Defined in GHC.Core.TyCon

Enum OverridingBool Source #

Since: 9.4.1

Instance details

Defined in GHC.Data.Bool

Enum DumpFlag Source # 
Instance details

Defined in GHC.Driver.Flags

Enum GeneralFlag Source # 
Instance details

Defined in GHC.Driver.Flags

Enum Language Source # 
Instance details

Defined in GHC.Driver.Flags

Enum WarningFlag Source # 
Instance details

Defined in GHC.Driver.Flags

Enum ClosureType Source # 
Instance details

Defined in GHC.Exts.Heap.ClosureTypes

Enum Extension Source # 
Instance details

Defined in GHC.LanguageExtensions.Type

Enum ExtBits Source # 
Instance details

Defined in GHC.Parser.Lexer

Enum CCallConv Source # 
Instance details

Defined in GHC.Types.ForeignCall

Enum Safety Source # 
Instance details

Defined in GHC.Types.ForeignCall

Enum LitNumType Source # 
Instance details

Defined in GHC.Types.Literal

Enum ProfAuto Source # 
Instance details

Defined in GHC.Types.ProfAuto

Enum THResultType Source # 
Instance details

Defined in GHCi.Message

Enum Ordering

Since: base-2.1

Instance details

Defined in GHC.Enum

Enum Day 
Instance details

Defined in Data.Time.Calendar.Days

Methods

succ :: Day -> Day #

pred :: Day -> Day #

toEnum :: Int -> Day #

fromEnum :: Day -> Int #

enumFrom :: Day -> [Day] #

enumFromThen :: Day -> Day -> [Day] #

enumFromTo :: Day -> Day -> [Day] #

enumFromThenTo :: Day -> Day -> Day -> [Day] #

Enum DayOfWeek

"Circular", so for example [Tuesday ..] gives an endless sequence. Also: fromEnum gives [1 .. 7] for [Monday .. Sunday], and toEnum performs mod 7 to give a cycle of days.

Instance details

Defined in Data.Time.Calendar.Week

Enum DiffTime 
Instance details

Defined in Data.Time.Clock.Internal.DiffTime

Enum NominalDiffTime 
Instance details

Defined in Data.Time.Clock.Internal.NominalDiffTime

Enum Integer

Since: base-2.1

Instance details

Defined in GHC.Enum

Enum Natural

Since: base-4.8.0.0

Instance details

Defined in GHC.Enum

Enum ()

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

succ :: () -> () #

pred :: () -> () #

toEnum :: Int -> () #

fromEnum :: () -> Int #

enumFrom :: () -> [()] #

enumFromThen :: () -> () -> [()] #

enumFromTo :: () -> () -> [()] #

enumFromThenTo :: () -> () -> () -> [()] #

Enum Bool

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

succ :: Bool -> Bool #

pred :: Bool -> Bool #

toEnum :: Int -> Bool #

fromEnum :: Bool -> Int #

enumFrom :: Bool -> [Bool] #

enumFromThen :: Bool -> Bool -> [Bool] #

enumFromTo :: Bool -> Bool -> [Bool] #

enumFromThenTo :: Bool -> Bool -> Bool -> [Bool] #

Enum Char

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

succ :: Char -> Char #

pred :: Char -> Char #

toEnum :: Int -> Char #

fromEnum :: Char -> Int #

enumFrom :: Char -> [Char] #

enumFromThen :: Char -> Char -> [Char] #

enumFromTo :: Char -> Char -> [Char] #

enumFromThenTo :: Char -> Char -> Char -> [Char] #

Enum Int

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

succ :: Int -> Int #

pred :: Int -> Int #

toEnum :: Int -> Int #

fromEnum :: Int -> Int #

enumFrom :: Int -> [Int] #

enumFromThen :: Int -> Int -> [Int] #

enumFromTo :: Int -> Int -> [Int] #

enumFromThenTo :: Int -> Int -> Int -> [Int] #

Enum Levity

Since: base-4.16.0.0

Instance details

Defined in GHC.Enum

Enum VecCount

Since: base-4.10.0.0

Instance details

Defined in GHC.Enum

Enum VecElem

Since: base-4.10.0.0

Instance details

Defined in GHC.Enum

Enum Word

Since: base-2.1

Instance details

Defined in GHC.Enum

Methods

succ :: Word -> Word #

pred :: Word -> Word #

toEnum :: Int -> Word #

fromEnum :: Word -> Int #

enumFrom :: Word -> [Word] #

enumFromThen :: Word -> Word -> [Word] #

enumFromTo :: Word -> Word -> [Word] #

enumFromThenTo :: Word -> Word -> Word -> [Word] #

Enum a => Enum (And a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

succ :: And a -> And a #

pred :: And a -> And a #

toEnum :: Int -> And a #

fromEnum :: And a -> Int #

enumFrom :: And a -> [And a] #

enumFromThen :: And a -> And a -> [And a] #

enumFromTo :: And a -> And a -> [And a] #

enumFromThenTo :: And a -> And a -> And a -> [And a] #

Enum a => Enum (Iff a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

succ :: Iff a -> Iff a #

pred :: Iff a -> Iff a #

toEnum :: Int -> Iff a #

fromEnum :: Iff a -> Int #

enumFrom :: Iff a -> [Iff a] #

enumFromThen :: Iff a -> Iff a -> [Iff a] #

enumFromTo :: Iff a -> Iff a -> [Iff a] #

enumFromThenTo :: Iff a -> Iff a -> Iff a -> [Iff a] #

Enum a => Enum (Ior a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

succ :: Ior a -> Ior a #

pred :: Ior a -> Ior a #

toEnum :: Int -> Ior a #

fromEnum :: Ior a -> Int #

enumFrom :: Ior a -> [Ior a] #

enumFromThen :: Ior a -> Ior a -> [Ior a] #

enumFromTo :: Ior a -> Ior a -> [Ior a] #

enumFromThenTo :: Ior a -> Ior a -> Ior a -> [Ior a] #

Enum a => Enum (Xor a)

Since: base-4.16

Instance details

Defined in Data.Bits

Methods

succ :: Xor a -> Xor a #

pred :: Xor a -> Xor a #

toEnum :: Int -> Xor a #

fromEnum :: Xor a -> Int #

enumFrom :: Xor a -> [Xor a] #

enumFromThen :: Xor a -> Xor a -> [Xor a] #

enumFromTo :: Xor a -> Xor a -> [Xor a] #

enumFromThenTo :: Xor a -> Xor a -> Xor a -> [Xor a] #

Enum a => Enum (Identity a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Identity

Enum a => Enum (First a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

succ :: First a -> First a #

pred :: First a -> First a #

toEnum :: Int -> First a #

fromEnum :: First a -> Int #

enumFrom :: First a -> [First a] #

enumFromThen :: First a -> First a -> [First a] #

enumFromTo :: First a -> First a -> [First a] #

enumFromThenTo :: First a -> First a -> First a -> [First a] #

Enum a => Enum (Last a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

succ :: Last a -> Last a #

pred :: Last a -> Last a #

toEnum :: Int -> Last a #

fromEnum :: Last a -> Int #

enumFrom :: Last a -> [Last a] #

enumFromThen :: Last a -> Last a -> [Last a] #

enumFromTo :: Last a -> Last a -> [Last a] #

enumFromThenTo :: Last a -> Last a -> Last a -> [Last a] #

Enum a => Enum (Max a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

succ :: Max a -> Max a #

pred :: Max a -> Max a #

toEnum :: Int -> Max a #

fromEnum :: Max a -> Int #

enumFrom :: Max a -> [Max a] #

enumFromThen :: Max a -> Max a -> [Max a] #

enumFromTo :: Max a -> Max a -> [Max a] #

enumFromThenTo :: Max a -> Max a -> Max a -> [Max a] #

Enum a => Enum (Min a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Methods

succ :: Min a -> Min a #

pred :: Min a -> Min a #

toEnum :: Int -> Min a #

fromEnum :: Min a -> Int #

enumFrom :: Min a -> [Min a] #

enumFromThen :: Min a -> Min a -> [Min a] #

enumFromTo :: Min a -> Min a -> [Min a] #

enumFromThenTo :: Min a -> Min a -> Min a -> [Min a] #

Enum a => Enum (WrappedMonoid a)

Since: base-4.9.0.0

Instance details

Defined in Data.Semigroup

Integral a => Enum (Ratio a)

Since: base-2.0.1

Instance details

Defined in GHC.Real

Methods

succ :: Ratio a -> Ratio a #

pred :: Ratio a -> Ratio a #

toEnum :: Int -> Ratio a #

fromEnum :: Ratio a -> Int #

enumFrom :: Ratio a -> [Ratio a] #

enumFromThen :: Ratio a -> Ratio a -> [Ratio a] #

enumFromTo :: Ratio a -> Ratio a -> [Ratio a] #

enumFromThenTo :: Ratio a -> Ratio a -> Ratio a -> [Ratio a] #

Enum a => Enum (a) 
Instance details

Defined in GHC.Enum

Methods

succ :: (a) -> (a) #

pred :: (a) -> (a) #

toEnum :: Int -> (a) #

fromEnum :: (a) -> Int #

enumFrom :: (a) -> [(a)] #

enumFromThen :: (a) -> (a) -> [(a)] #

enumFromTo :: (a) -> (a) -> [(a)] #

enumFromThenTo :: (a) -> (a) -> (a) -> [(a)] #

Enum (Fixed a)

Recall that, for numeric types, succ and pred typically add and subtract 1, respectively. This is not true in the case of Fixed, whose successor and predecessor functions intuitively return the "next" and "previous" values in the enumeration. The results of these functions thus depend on the resolution of the Fixed value. For example, when enumerating values of resolution 10^-3 of type Milli = Fixed E3,

  succ (0.000 :: Milli) == 1.001

and likewise

  pred (0.000 :: Milli) == -0.001

In other words, succ and pred increment and decrement a fixed-precision value by the least amount such that the value's resolution is unchanged. For example, 10^-12 is the smallest (positive) amount that can be added to a value of type Pico = Fixed E12 without changing its resolution, and so

  succ (0.000000000000 :: Pico) == 0.000000000001

and similarly

  pred (0.000000000000 :: Pico) == -0.000000000001

This is worth bearing in mind when defining Fixed arithmetic sequences. In particular, you may be forgiven for thinking the sequence

  [1..10] :: [Pico]

evaluates to [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] :: [Pico].

However, this is not true. On the contrary, similarly to the above implementations of succ and pred, enumFromTo :: Pico -> Pico -> [Pico] has a "step size" of 10^-12. Hence, the list [1..10] :: [Pico] has the form

  [1.000000000000, 1.00000000001, 1.00000000002, ..., 10.000000000000]

and contains 9 * 10^12 + 1 values.

Since: base-2.1

Instance details

Defined in Data.Fixed

Methods

succ :: Fixed a -> Fixed a #

pred :: Fixed a -> Fixed a #

toEnum :: Int -> Fixed a #

fromEnum :: Fixed a -> Int #

enumFrom :: Fixed a -> [Fixed a] #

enumFromThen :: Fixed a -> Fixed a -> [Fixed a] #

enumFromTo :: Fixed a -> Fixed a -> [Fixed a] #

enumFromThenTo :: Fixed a -> Fixed a -> Fixed a -> [Fixed a] #

Enum (Proxy s)

Since: base-4.7.0.0

Instance details

Defined in Data.Proxy

Methods

succ :: Proxy s -> Proxy s #

pred :: Proxy s -> Proxy s #

toEnum :: Int -> Proxy s #

fromEnum :: Proxy s -> Int #

enumFrom :: Proxy s -> [Proxy s] #

enumFromThen :: Proxy s -> Proxy s -> [Proxy s] #

enumFromTo :: Proxy s -> Proxy s -> [Proxy s] #

enumFromThenTo :: Proxy s -> Proxy s -> Proxy s -> [Proxy s] #

Enum a => Enum (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

succ :: Const a b -> Const a b #

pred :: Const a b -> Const a b #

toEnum :: Int -> Const a b #

fromEnum :: Const a b -> Int #

enumFrom :: Const a b -> [Const a b] #

enumFromThen :: Const a b -> Const a b -> [Const a b] #

enumFromTo :: Const a b -> Const a b -> [Const a b] #

enumFromThenTo :: Const a b -> Const a b -> Const a b -> [Const a b] #

Enum (f a) => Enum (Ap f a)

Since: base-4.12.0.0

Instance details

Defined in Data.Monoid

Methods

succ :: Ap f a -> Ap f a #

pred :: Ap f a -> Ap f a #

toEnum :: Int -> Ap f a #

fromEnum :: Ap f a -> Int #

enumFrom :: Ap f a -> [Ap f a] #

enumFromThen :: Ap f a -> Ap f a -> [Ap f a] #

enumFromTo :: Ap f a -> Ap f a -> [Ap f a] #

enumFromThenTo :: Ap f a -> Ap f a -> Ap f a -> [Ap f a] #

Enum (f a) => Enum (Alt f a)

Since: base-4.8.0.0

Instance details

Defined in Data.Semigroup.Internal

Methods

succ :: Alt f a -> Alt f a #

pred :: Alt f a -> Alt f a #

toEnum :: Int -> Alt f a #

fromEnum :: Alt f a -> Int #

enumFrom :: Alt f a -> [Alt f a] #

enumFromThen :: Alt f a -> Alt f a -> [Alt f a] #

enumFromTo :: Alt f a -> Alt f a -> [Alt f a] #

enumFromThenTo :: Alt f a -> Alt f a -> Alt f a -> [Alt f a] #

Coercible a b => Enum (Coercion a b)

Since: base-4.7.0.0

Instance details

Defined in Data.Type.Coercion

Methods

succ :: Coercion a b -> Coercion a b #

pred :: Coercion a b -> Coercion a b #

toEnum :: Int -> Coercion a b #

fromEnum :: Coercion a b -> Int #

enumFrom :: Coercion a b -> [Coercion a b] #

enumFromThen :: Coercion a b -> Coercion a b -> [Coercion a b] #

enumFromTo :: Coercion a b -> Coercion a b -> [Coercion a b] #

enumFromThenTo :: Coercion a b -> Coercion a b -> Coercion a b -> [Coercion a b] #

a ~ b => Enum (a :~: b)

Since: base-4.7.0.0

Instance details

Defined in Data.Type.Equality

Methods

succ :: (a :~: b) -> a :~: b #

pred :: (a :~: b) -> a :~: b #

toEnum :: Int -> a :~: b #

fromEnum :: (a :~: b) -> Int #

enumFrom :: (a :~: b) -> [a :~: b] #

enumFromThen :: (a :~: b) -> (a :~: b) -> [a :~: b] #

enumFromTo :: (a :~: b) -> (a :~: b) -> [a :~: b] #

enumFromThenTo :: (a :~: b) -> (a :~: b) -> (a :~: b) -> [a :~: b] #

a ~~ b => Enum (a :~~: b)

Since: base-4.10.0.0

Instance details

Defined in Data.Type.Equality

Methods

succ :: (a :~~: b) -> a :~~: b #

pred :: (a :~~: b) -> a :~~: b #

toEnum :: Int -> a :~~: b #

fromEnum :: (a :~~: b) -> Int #

enumFrom :: (a :~~: b) -> [a :~~: b] #

enumFromThen :: (a :~~: b) -> (a :~~: b) -> [a :~~: b] #

enumFromTo :: (a :~~: b) -> (a :~~: b) -> [a :~~: b] #

enumFromThenTo :: (a :~~: b) -> (a :~~: b) -> (a :~~: b) -> [a :~~: b] #

class Eq a where #

The Eq class defines equality (==) and inequality (/=). All the basic datatypes exported by the Prelude are instances of Eq, and Eq may be derived for any datatype whose constituents are also instances of Eq.

The Haskell Report defines no laws for Eq. However, instances are encouraged to follow these properties:

Reflexivity
x == x = True
Symmetry
x == y = y == x
Transitivity
if x == y && y == z = True, then x == z = True
Extensionality
if x == y = True and f is a function whose return type is an instance of Eq, then f x == f y = True
Negation
x /= y = not (x == y)

Minimal complete definition: either == or /=.

Minimal complete definition

(==) | (/=)

Methods

(==) :: a -> a -> Bool infix 4 #

(/=) :: a -> a -> Bool infix 4 #

Instances

Instances details
Eq Constr

Equality of constructors

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

(==) :: Constr -> Constr -> Bool #

(/=) :: Constr -> Constr -> Bool #

Eq ConstrRep

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Eq DataRep

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

(==) :: DataRep -> DataRep -> Bool #

(/=) :: DataRep -> DataRep -> Bool #

Eq Fixity

Since: base-4.0.0.0

Instance details

Defined in Data.Data

Methods

(==) :: Fixity -> Fixity -> Bool #

(/=) :: Fixity -> Fixity -> Bool #

Eq All

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Methods

(==) :: All -> All -> Bool #

(/=) :: All -> All -> Bool #

Eq Any

Since: base-2.1

Instance details

Defined in Data.Semigroup.Internal

Methods

(==) :: Any -> Any -> Bool #

(/=) :: Any -> Any -> Bool #

Eq SomeTypeRep 
Instance details

Defined in Data.Typeable.Internal

Eq Version

Since: base-2.1

Instance details

Defined in Data.Version

Methods

(==) :: Version -> Version -> Bool #

(/=) :: Version -> Version -> Bool #

Eq Void

Since: base-4.8.0.0

Instance details

Defined in Data.Void

Methods

(==) :: Void -> Void -> Bool #

(/=) :: Void -> Void -> Bool #

Eq Errno

Since: base-2.1

Instance details

Defined in Foreign.C.Error

Methods

(==) :: Errno -> Errno -> Bool #

(/=) :: Errno -> Errno -> Bool #

Eq CBool 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CBool -> CBool -> Bool #

(/=) :: CBool -> CBool -> Bool #

Eq CChar 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CChar -> CChar -> Bool #

(/=) :: CChar -> CChar -> Bool #

Eq CClock 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CClock -> CClock -> Bool #

(/=) :: CClock -> CClock -> Bool #

Eq CDouble 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CDouble -> CDouble -> Bool #

(/=) :: CDouble -> CDouble -> Bool #

Eq CFloat 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CFloat -> CFloat -> Bool #

(/=) :: CFloat -> CFloat -> Bool #

Eq CInt 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CInt -> CInt -> Bool #

(/=) :: CInt -> CInt -> Bool #

Eq CIntMax 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CIntMax -> CIntMax -> Bool #

(/=) :: CIntMax -> CIntMax -> Bool #

Eq CIntPtr 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CIntPtr -> CIntPtr -> Bool #

(/=) :: CIntPtr -> CIntPtr -> Bool #

Eq CLLong 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CLLong -> CLLong -> Bool #

(/=) :: CLLong -> CLLong -> Bool #

Eq CLong 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CLong -> CLong -> Bool #

(/=) :: CLong -> CLong -> Bool #

Eq CPtrdiff 
Instance details

Defined in Foreign.C.Types

Eq CSChar 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CSChar -> CSChar -> Bool #

(/=) :: CSChar -> CSChar -> Bool #

Eq CSUSeconds 
Instance details

Defined in Foreign.C.Types

Eq CShort 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CShort -> CShort -> Bool #

(/=) :: CShort -> CShort -> Bool #

Eq CSigAtomic 
Instance details

Defined in Foreign.C.Types

Eq CSize 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CSize -> CSize -> Bool #

(/=) :: CSize -> CSize -> Bool #

Eq CTime 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CTime -> CTime -> Bool #

(/=) :: CTime -> CTime -> Bool #

Eq CUChar 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CUChar -> CUChar -> Bool #

(/=) :: CUChar -> CUChar -> Bool #

Eq CUInt 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CUInt -> CUInt -> Bool #

(/=) :: CUInt -> CUInt -> Bool #

Eq CUIntMax 
Instance details

Defined in Foreign.C.Types

Eq CUIntPtr 
Instance details

Defined in Foreign.C.Types

Eq CULLong 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CULLong -> CULLong -> Bool #

(/=) :: CULLong -> CULLong -> Bool #

Eq CULong 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CULong -> CULong -> Bool #

(/=) :: CULong -> CULong -> Bool #

Eq CUSeconds 
Instance details

Defined in Foreign.C.Types

Eq CUShort 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CUShort -> CUShort -> Bool #

(/=) :: CUShort -> CUShort -> Bool #

Eq CWchar 
Instance details

Defined in Foreign.C.Types

Methods

(==) :: CWchar -> CWchar -> Bool #

(/=) :: CWchar -> CWchar -> Bool #

Eq IntPtr 
Instance details

Defined in Foreign.Ptr

Methods

(==) :: IntPtr -> IntPtr -> Bool #

(/=) :: IntPtr -> IntPtr -> Bool #

Eq WordPtr 
Instance details

Defined in Foreign.Ptr

Methods

(==) :: WordPtr -> WordPtr -> Bool #

(/=) :: WordPtr -> WordPtr -> Bool #

Eq ByteOrder

Since: base-4.11.0.0

Instance details

Defined in GHC.ByteOrder

Eq BlockReason

Since: base-4.3.0.0

Instance details

Defined in GHC.Conc.Sync

Eq ThreadId

Since: base-4.2.0.0

Instance details

Defined in GHC.Conc.Sync

Eq ThreadStatus

Since: base-4.3.0.0

Instance details

Defined in GHC.Conc.Sync

Eq ErrorCall

Since: base-4.7.0.0

Instance details

Defined in GHC.Exception

Eq ArithException

Since: base-3.0

Instance details

Defined in GHC.Exception.Type

Eq SpecConstrAnnotation

Since: base-4.3.0.0

Instance details

Defined in GHC.Exts

Eq Fingerprint

Since: base-4.4.0.0

Instance details

Defined in GHC.Fingerprint.Type

Eq Associativity

Since: base-4.6.0.0

Instance details

Defined in GHC.Generics

Eq DecidedStrictness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Eq Fixity

Since: base-4.6.0.0

Instance details

Defined in GHC.Generics

Methods

(==) :: Fixity -> Fixity -> Bool #

(/=) :: Fixity -> Fixity -> Bool #

Eq SourceStrictness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Eq SourceUnpackedness

Since: base-4.9.0.0

Instance details

Defined in GHC.Generics

Eq MaskingState

Since: base-4.3.0.0

Instance details

Defined in GHC.IO

Eq BufferState

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Buffer

Eq IODeviceType

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Device

Eq SeekMode

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Device

Eq CodingProgress

Since: base-4.4.0.0

Instance details

Defined in GHC.IO.Encoding.Types

Eq ArrayException

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Exception

Eq AsyncException

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Exception

Eq ExitCode 
Instance details

Defined in GHC.IO.Exception

Eq IOErrorType

Since: base-4.1.0.0

Instance details

Defined in GHC.IO.Exception

Eq IOException

Since: base-4.1.0.0

Instance details

Defined in GHC.IO.Exception

Eq HandlePosn

Since: base-4.1.0.0

Instance details

Defined in GHC.IO.Handle

Eq BufferMode

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Handle.Types

Eq Handle

Since: base-4.1.0.0

Instance details

Defined in GHC.IO.Handle.Types

Methods

(==) :: Handle -> Handle -> Bool #

(/=) :: Handle -> Handle -> Bool #

Eq Newline

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Handle.Types

Methods

(==) :: Newline -> Newline -> Bool #

(/=) :: Newline -> Newline -> Bool #

Eq NewlineMode

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.Handle.Types

Eq IOMode

Since: base-4.2.0.0

Instance details

Defined in GHC.IO.IOMode

Methods

(==) :: IOMode -> IOMode -> Bool #

(/=) :: IOMode -> IOMode -> Bool #

Eq Int16

Since: base-2.1

Instance details

Defined in GHC.Int

Methods

(==) :: Int16 -> Int16 -> Bool #

(/=) :: Int16 -> Int16 -> Bool #

Eq Int32

Since: base-2.1

Instance details

Defined in GHC.Int

Methods

(==) :: Int32 -> Int32 -> Bool #

(/=) :: Int32 -> Int32 -> Bool #

Eq Int64

Since: base-2.1

Instance details

Defined in GHC.Int

Methods

(==) :: Int64 -> Int64 -> Bool #

(/=) :: Int64 -> Int64 -> Bool #

Eq Int8

Since: base-2.1

Instance details

Defined in GHC.Int

Methods

(==) :: Int8 -> Int8 -> Bool #

(/=) :: Int8 -> Int8 -> Bool #

Eq IoSubSystem 
Instance details

Defined in GHC.RTS.Flags

Eq SrcLoc

Since: base-4.9.0.0

Instance details

Defined in GHC.Stack.Types

Methods

(==) :: SrcLoc -> SrcLoc -> Bool #

(/=) :: SrcLoc -> SrcLoc -> Bool #

Eq SomeChar 
Instance details

Defined in GHC.TypeLits

Eq SomeSymbol

Since: base-4.7.0.0

Instance details

Defined in GHC.TypeLits

Eq SomeNat

Since: base-4.7.0.0

Instance details

Defined in GHC.TypeNats

Methods

(==) :: SomeNat -> SomeNat -> Bool #

(/=) :: SomeNat -> SomeNat -> Bool #

Eq GeneralCategory

Since: base-2.1

Instance details

Defined in GHC.Unicode

Eq Word16

Since: base-2.1

Instance details

Defined in GHC.Word

Methods

(==) :: Word16 -> Word16 -> Bool #

(/=) :: Word16 -> Word16 -> Bool #

Eq Word32

Since: base-2.1

Instance details

Defined in GHC.Word

Methods

(==) :: Word32 -> Word32 -> Bool #

(/=) :: Word32 -> Word32 -> Bool #

Eq Word64

Since: base-2.1

Instance details

Defined in GHC.Word

Methods

(==) :: Word64 -> Word64 -> Bool #

(/=) :: Word64 -> Word64 -> Bool #

Eq Word8

Since: base-2.1

Instance details

Defined in GHC.Word

Methods

(==) :: Word8 -> Word8 -> Bool #

(/=) :: Word8 -> Word8 -> Bool #

Eq CBlkCnt 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CBlkCnt -> CBlkCnt -> Bool #

(/=) :: CBlkCnt -> CBlkCnt -> Bool #

Eq CBlkSize 
Instance details

Defined in System.Posix.Types

Eq CCc 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CCc -> CCc -> Bool #

(/=) :: CCc -> CCc -> Bool #

Eq CClockId 
Instance details

Defined in System.Posix.Types

Eq CDev 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CDev -> CDev -> Bool #

(/=) :: CDev -> CDev -> Bool #

Eq CFsBlkCnt 
Instance details

Defined in System.Posix.Types

Eq CFsFilCnt 
Instance details

Defined in System.Posix.Types

Eq CGid 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CGid -> CGid -> Bool #

(/=) :: CGid -> CGid -> Bool #

Eq CId 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CId -> CId -> Bool #

(/=) :: CId -> CId -> Bool #

Eq CIno 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CIno -> CIno -> Bool #

(/=) :: CIno -> CIno -> Bool #

Eq CKey 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CKey -> CKey -> Bool #

(/=) :: CKey -> CKey -> Bool #

Eq CMode 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CMode -> CMode -> Bool #

(/=) :: CMode -> CMode -> Bool #

Eq CNfds 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CNfds -> CNfds -> Bool #

(/=) :: CNfds -> CNfds -> Bool #

Eq CNlink 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CNlink -> CNlink -> Bool #

(/=) :: CNlink -> CNlink -> Bool #

Eq COff 
Instance details

Defined in System.Posix.Types

Methods

(==) :: COff -> COff -> Bool #

(/=) :: COff -> COff -> Bool #

Eq CPid 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CPid -> CPid -> Bool #

(/=) :: CPid -> CPid -> Bool #

Eq CRLim 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CRLim -> CRLim -> Bool #

(/=) :: CRLim -> CRLim -> Bool #

Eq CSocklen 
Instance details

Defined in System.Posix.Types

Eq CSpeed 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CSpeed -> CSpeed -> Bool #

(/=) :: CSpeed -> CSpeed -> Bool #

Eq CSsize 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CSsize -> CSsize -> Bool #

(/=) :: CSsize -> CSsize -> Bool #

Eq CTcflag 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CTcflag -> CTcflag -> Bool #

(/=) :: CTcflag -> CTcflag -> Bool #

Eq CTimer 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CTimer -> CTimer -> Bool #

(/=) :: CTimer -> CTimer -> Bool #

Eq CUid 
Instance details

Defined in System.Posix.Types

Methods

(==) :: CUid -> CUid -> Bool #

(/=) :: CUid -> CUid -> Bool #

Eq Fd 
Instance details

Defined in System.Posix.Types

Methods

(==) :: Fd -> Fd -> Bool #

(/=) :: Fd -> Fd -> Bool #

Eq Lexeme

Since: base-2.1

Instance details

Defined in Text.Read.Lex

Methods

(==) :: Lexeme -> Lexeme -> Bool #

(/=) :: Lexeme -> Lexeme -> Bool #

Eq Number

Since: base-4.6.0.0

Instance details

Defined in Text.Read.Lex

Methods

(==) :: Number -> Number -> Bool #

(/=) :: Number -> Number -> Bool #

Eq ByteString 
Instance details

Defined in Data.ByteString.Internal

Eq ByteString 
Instance details

Defined in Data.ByteString.Lazy.Internal

Eq ShortByteString 
Instance details

Defined in Data.ByteString.Short.Internal

Eq IntSet 
Instance details

Defined in Data.IntSet.Internal

Methods

(==) :: IntSet -> IntSet -> Bool #

(/=) :: IntSet -> IntSet -> Bool #

Eq FileType 
Instance details

Defined in System.Directory.Internal.Common

Eq Permissions 
Instance details

Defined in System.Directory.Internal.Common

Eq XdgDirectory 
Instance details

Defined in System.Directory.Internal.Common

Eq XdgDirectoryList 
Instance details

Defined in System.Directory.Internal.Common

Eq BigNat 
Instance details

Defined in GHC.Num.BigNat

Methods

(==) :: BigNat -> BigNat -> Bool #

(/=) :: BigNat -> BigNat -> Bool #

Eq ForeignSrcLang 
Instance details

Defined in GHC.ForeignSrcLang.Type

Eq Extension 
Instance details

Defined in GHC.LanguageExtensions.Type

Eq PrimOp Source # 
Instance details

Defined in GHC.Builtin.PrimOps

Methods

(==) :: PrimOp -> PrimOp -> Bool #

(/=) :: PrimOp -> PrimOp -> Bool #

Eq ByteOff Source # 
Instance details

Defined in GHC.ByteCode.Types

Methods

(==) :: ByteOff -> ByteOff -> Bool #

(/=) :: ByteOff -> ByteOff -> Bool #

Eq NativeCallType Source # 
Instance details

Defined in GHC.ByteCode.Types

Eq RegBitmap Source # 
Instance details

Defined in GHC.ByteCode.Types

Eq WordOff Source # 
Instance details

Defined in GHC.ByteCode.Types

Methods

(==) :: WordOff -> WordOff -> Bool #

(/=) :: WordOff -> WordOff -> Bool #

Eq CmmInfoTable Source # 
Instance details

Defined in GHC.Cmm

Eq ProfilingInfo Source # 
Instance details

Defined in GHC.Cmm

Eq SectionProtection Source # 
Instance details

Defined in GHC.Cmm

Eq CLabel Source # 
Instance details

Defined in GHC.Cmm.CLabel

Methods

(==) :: CLabel -> CLabel -> Bool #

(/=) :: CLabel -> CLabel -> Bool #

Eq ConInfoTableLocation Source # 
Instance details

Defined in GHC.Cmm.CLabel

Eq DynamicLinkerLabelInfo Source # 
Instance details

Defined in GHC.Cmm.CLabel

Eq ForeignLabelSource Source # 
Instance details

Defined in GHC.Cmm.CLabel

Eq InfoProvEnt Source # 
Instance details

Defined in GHC.Cmm.CLabel

Eq NeedExternDecl Source # 
Instance details

Defined in GHC.Cmm.CLabel

Eq UniqueSet Source # 
Instance details

Defined in GHC.Cmm.Dataflow.Collections

Eq Label Source # 
Instance details

Defined in GHC.Cmm.Dataflow.Label

Methods

(==) :: Label -> Label -> Bool #

(/=) :: Label -> Label -> Bool #

Eq LabelSet Source # 
Instance details

Defined in GHC.Cmm.Dataflow.Label

Eq AlignmentSpec Source # 
Instance details

Defined in GHC.Cmm.Expr

Eq Area Source # 
Instance details

Defined in GHC.Cmm.Expr

Methods

(==) :: Area -> Area -> Bool #

(/=) :: Area -> Area -> Bool #

Eq CmmExpr Source # 
Instance details

Defined in GHC.Cmm.Expr

Methods

(==) :: CmmExpr -> CmmExpr -> Bool #

(/=) :: CmmExpr -> CmmExpr -> Bool #

Eq CmmLit Source # 
Instance details

Defined in GHC.Cmm.Expr

Methods

(==) :: CmmLit -> CmmLit -> Bool #

(/=) :: CmmLit -> CmmLit -> Bool #

Eq AtomicMachOp Source # 
Instance details

Defined in GHC.Cmm.MachOp

Eq CallishMachOp Source # 
Instance details

Defined in GHC.Cmm.MachOp

Eq MachOp Source # 
Instance details

Defined in GHC.Cmm.MachOp

Methods

(==) :: MachOp -> MachOp -> Bool #

(/=) :: MachOp -> MachOp -> Bool #

Eq MemoryOrdering Source # 
Instance details

Defined in GHC.Cmm.MachOp

Eq CmmReturnInfo Source # 
Instance details

Defined in GHC.Cmm.Node

Eq CmmTickScope Source # 
Instance details

Defined in GHC.Cmm.Node

Eq Convention Source # 
Instance details

Defined in GHC.Cmm.Node

Eq ForeignConvention Source # 
Instance details

Defined in GHC.Cmm.Node

Eq ForeignTarget Source # 
Instance details

Defined in GHC.Cmm.Node

Eq CmmReg Source # 
Instance details

Defined in GHC.Cmm.Reg

Methods

(==) :: CmmReg -> CmmReg -> Bool #

(/=) :: CmmReg -> CmmReg -> Bool #

Eq GlobalReg Source # 
Instance details

Defined in GHC.Cmm.Reg

Eq LocalReg Source # 
Instance details

Defined in GHC.Cmm.Reg

Eq VGcPtr Source # 
Instance details

Defined in GHC.Cmm.Reg

Methods

(==) :: VGcPtr -> VGcPtr -> Bool #

(/=) :: VGcPtr -> VGcPtr -> Bool #

Eq SwitchTargets Source # 
Instance details

Defined in GHC.Cmm.Switch

Eq ForeignHint Source # 
Instance details

Defined in GHC.Cmm.Type

Eq Width Source # 
Instance details

Defined in GHC.Cmm.Type

Methods

(==) :: Width -> Width -> Bool #

(/=) :: Width -> Width -> Bool #

Eq LlvmVersion Source # 
Instance details

Defined in GHC.CmmToLlvm.Config

Eq AltCon Source # 
Instance details

Defined in GHC.Core

Methods

(==) :: AltCon -> AltCon -> Bool #

(/=) :: AltCon -> AltCon -> Bool #

Eq UnfoldingCache Source # 
Instance details

Defined in GHC.Core

Eq UnfoldingGuidance Source # 
Instance details

Defined in GHC.Core

Eq Class Source # 
Instance details

Defined in GHC.Core.Class

Methods

(==) :: Class -> Class -> Bool #

(/=) :: Class -> Class -> Bool #

Eq CoAxiomRule Source # 
Instance details

Defined in GHC.Core.Coercion.Axiom

Eq ConLike Source # 
Instance details

Defined in GHC.Core.ConLike

Methods

(==) :: ConLike -> ConLike -> Bool #

(/=) :: ConLike -> ConLike -> Bool #

Eq DataCon Source # 
Instance details

Defined in GHC.Core.DataCon

Methods

(==) :: DataCon -> DataCon -> Bool #

(/=) :: DataCon -> DataCon -> Bool #

Eq StrictnessMark Source # 
Instance details

Defined in GHC.Core.DataCon

Eq StaticPtrCheck Source # 
Instance details

Defined in GHC.Core.Lint

Eq IsSubmult Source # 
Instance details

Defined in GHC.Core.Multiplicity

Eq ArityType Source # 
Instance details

Defined in GHC.Core.Opt.Arity

Eq Tick Source # 
Instance details

Defined in GHC.Core.Opt.Stats

Methods

(==) :: Tick -> Tick -> Bool #

(/=) :: Tick -> Tick -> Bool #

Eq PatSyn Source # 
Instance details

Defined in GHC.Core.PatSyn

Methods

(==) :: PatSyn -> PatSyn -> Bool #

(/=) :: PatSyn -> PatSyn -> Bool #

Eq EqRel Source # 
Instance details

Defined in GHC.Core.Predicate

Methods

(==) :: EqRel -> EqRel -> Bool #

(/=) :: EqRel -> EqRel -> Bool #

Eq CoSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

(==) :: CoSel -> CoSel -> Bool #

(/=) :: CoSel -> CoSel -> Bool #

Eq FunSel Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

(==) :: FunSel -> FunSel -> Bool #

(/=) :: FunSel -> FunSel -> Bool #

Eq TyLit Source # 
Instance details

Defined in GHC.Core.TyCo.Rep

Methods

(==) :: TyLit -> TyLit -> Bool #

(/=) :: TyLit -> TyLit -> Bool #

Eq Injectivity Source # 
Instance details

Defined in GHC.Core.TyCon

Eq PrimElemRep Source # 
Instance details

Defined in GHC.Core.TyCon

Eq PrimRep Source # 
Instance details

Defined in GHC.Core.TyCon

Methods

(==) :: PrimRep -> PrimRep -> Bool #

(/=) :: PrimRep -> PrimRep -> Bool #

Eq TyCon Source # 
Instance details

Defined in GHC.Core.TyCon

Methods

(==) :: TyCon -> TyCon -> Bool #

(/=) :: TyCon -> TyCon -> Bool #

Eq TyConFlavour Source # 
Instance details

Defined in GHC.Core.TyCon

Eq BindFlag Source # 
Instance details

Defined in GHC.Core.Unify

Eq OverridingBool Source #

Since: 9.4.1

Instance details

Defined in GHC.Data.Bool

Eq FastString Source # 
Instance details

Defined in GHC.Data.FastString

Eq LexicalFastString Source # 
Instance details

Defined in GHC.Data.FastString

Eq NonDetFastString Source # 
Instance details

Defined in GHC.Data.FastString

Eq EdgeType Source # 
Instance details

Defined in GHC.Data.Graph.Directed

Eq UnVarSet Source # 
Instance details

Defined in GHC.Data.Graph.UnVar

Eq ShortText Source # 
Instance details

Defined in GHC.Data.ShortText

Eq BackendName Source # 
Instance details

Defined in GHC.Driver.Backend.Internal

Eq WarnReason Source # 
Instance details

Defined in GHC.Driver.CmdLine

Eq BuildingCabalPackage Source # 
Instance details

Defined in GHC.Driver.Errors.Types

Eq DumpFlag Source # 
Instance details

Defined in GHC.Driver.Flags

Eq GeneralFlag Source # 
Instance details

Defined in GHC.Driver.Flags

Eq Language Source # 
Instance details

Defined in GHC.Driver.Flags

Eq WarningFlag Source # 
Instance details

Defined in GHC.Driver.Flags

Eq Phase Source # 
Instance details

Defined in GHC.Driver.Phases

Methods

(==) :: Phase -> Phase -> Bool #

(/=) :: Phase -> Phase -> Bool #

Eq CompilerInfo Source # 
Instance details

Defined in GHC.Driver.Session

Eq DynLibLoader Source # 
Instance details

Defined in GHC.Driver.Session

Eq DynamicTooState Source # 
Instance details

Defined in GHC.Driver.Session

Eq GhcLink Source # 
Instance details

Defined in GHC.Driver.Session

Methods

(==) :: GhcLink -> GhcLink -> Bool #

(/=) :: GhcLink -> GhcLink -> Bool #

Eq GhcMode Source # 
Instance details

Defined in GHC.Driver.Session

Methods

(==) :: GhcMode -> GhcMode -> Bool #

(/=) :: GhcMode -> GhcMode -> Bool #

Eq IgnorePackageFlag Source # 
Instance details

Defined in GHC.Driver.Session

Eq LinkerInfo Source # 
Instance details

Defined in GHC.Driver.Session

Eq ModRenaming Source # 
Instance details

Defined in GHC.Driver.Session

Eq PackageArg Source # 
Instance details

Defined in GHC.Driver.Session

Eq PackageDBFlag Source # 
Instance details

Defined in GHC.Driver.Session

Eq PackageFlag Source # 
Instance details

Defined in GHC.Driver.Session

Eq PkgDbRef Source # 
Instance details

Defined in GHC.Driver.Session

Eq TrustFlag Source # 
Instance details

Defined in GHC.Driver.Session

Eq ClosureType Source # 
Instance details

Defined in GHC.Exts.Heap.ClosureTypes

Eq PrimType Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Eq TsoFlags Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Eq WhatNext Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Eq WhyBlocked Source # 
Instance details

Defined in GHC.Exts.Heap.Closures

Eq CostCentre Source # 
Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Eq CostCentreStack Source # 
Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Eq IndexTable Source # 
Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Eq StgTSOProfInfo Source # 
Instance details

Defined in GHC.Exts.Heap.ProfInfo.Types

Eq ForeignSrcLang Source # 
Instance details

Defined in GHC.ForeignSrcLang.Type

Eq AnnsModule Source # 
Instance details

Defined in GHC.Hs

Eq HsRuleAnn Source # 
Instance details

Defined in GHC.Hs.Decls

Eq HsDocString Source # 
Instance details

Defined in GHC.Hs.DocString

Eq HsDocStringChunk Source # 
Instance details

Defined in GHC.Hs.DocString

Eq HsDocStringDecorator Source # 
Instance details

Defined in GHC.Hs.DocString

Eq BlankEpAnnotations Source # 
Instance details

Defined in GHC.Hs.Dump

Eq BlankSrcSpan Source # 
Instance details

Defined in GHC.Hs.Dump

Eq BotInfo Source # 
Instance details

Defined in GHC.HsToCore.Pmc.Solver.Types

Methods

(==) :: BotInfo -> BotInfo -> Bool #

(/=) :: BotInfo -> BotInfo -> Bool #

Eq PmAltCon Source #

Syntactic equality.

Instance details

Defined in GHC.HsToCore.Pmc.Solver.Types

Eq PmEquality Source # 
Instance details

Defined in GHC.HsToCore.Pmc.Solver.Types

Eq PmLit Source #

Syntactic equality.

Instance details

Defined in GHC.HsToCore.Pmc.Solver.Types

Methods

(==) :: PmLit -> PmLit -> Bool #

(/=) :: PmLit -> PmLit -> Bool #

Eq Precision Source # 
Instance details

Defined in GHC.HsToCore.Pmc.Types

Eq IfaceTyCon Source # 
Instance details

Defined in GHC.Iface.Type

Eq IfaceTyConInfo Source # 
Instance details

Defined in GHC.Iface.Type

Eq IfaceTyConSort Source # 
Instance details

Defined in GHC.Iface.Type

Eq IfaceTyLit Source # 
Instance details

Defined in GHC.Iface.Type

Eq Extension Source # 
Instance details

Defined in GHC.LanguageExtensions.Type

Eq AddEpAnn Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq Anchor Source # 
Instance details

Defined in GHC.Parser.Annotation

Methods

(==) :: Anchor -> Anchor -> Bool #

(/=) :: Anchor -> Anchor -> Bool #

Eq AnchorOperation Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq AnnKeywordId Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq AnnList Source # 
Instance details

Defined in GHC.Parser.Annotation

Methods

(==) :: AnnList -> AnnList -> Bool #

(/=) :: AnnList -> AnnList -> Bool #

Eq AnnListItem Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq AnnPragma Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq AnnSortKey Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq DeltaPos Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq EpAnnComments Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq EpaComment Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq EpaCommentTok Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq EpaLocation Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq HasE Source # 
Instance details

Defined in GHC.Parser.Annotation

Methods

(==) :: HasE -> HasE -> Bool #

(/=) :: HasE -> HasE -> Bool #

Eq IsUnicodeSyntax Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq NameAdornment Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq NameAnn Source # 
Instance details

Defined in GHC.Parser.Annotation

Methods

(==) :: NameAnn -> NameAnn -> Bool #

(/=) :: NameAnn -> NameAnn -> Bool #

Eq NoEpAnns Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq ParenType Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq TokenLocation Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq TrailingAnn Source # 
Instance details

Defined in GHC.Parser.Annotation

Eq LexErrKind Source # 
Instance details

Defined in GHC.Parser.Errors.Types

Eq NumUnderscoreReason Source # 
Instance details

Defined in GHC.Parser.Errors.Types

Eq ParseContext Source # 
Instance details

Defined in GHC.Parser.Errors.Types

Eq PatIncompleteDoBlock Source # 
Instance details

Defined in GHC.Parser.Errors.Types

Eq BmiVersion Source # 
Instance details

Defined in GHC.Platform

Eq Platform Source # 
Instance details

Defined in GHC.Platform

Eq PlatformWordSize Source # 
Instance details

Defined in GHC.Platform

Eq SseVersion Source # 
Instance details

Defined in GHC.Platform

Eq Arch Source # 
Instance details

Defined in GHC.Platform.ArchOS

Methods

(==) :: Arch -> Arch -> Bool #

(/=) :: Arch -> Arch -> Bool #

Eq ArchOS Source # 
Instance details

Defined in GHC.Platform.ArchOS

Methods

(==) :: ArchOS -> ArchOS -> Bool #

(/=) :: ArchOS -> ArchOS -> Bool #

Eq ArmABI Source # 
Instance details

Defined in GHC.Platform.ArchOS

Methods

(==) :: ArmABI -> ArmABI -> Bool #

(/=) :: ArmABI -> ArmABI -> Bool #

Eq ArmISA Source # 
Instance details

Defined in GHC.Platform.ArchOS

Methods

(==) :: ArmISA -> ArmISA -> Bool #

(/=) :: ArmISA -> ArmISA -> Bool #