1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
{-# LANGUAGE Trustworthy #-}
{-# LANGUAGE NoImplicitPrelude #-}
-----------------------------------------------------------------------------
-- |
-- Module : Prelude
-- Copyright : (c) The University of Glasgow 2001
-- License : BSD-style (see the file libraries/base/LICENSE)
--
-- Maintainer : libraries@haskell.org
-- Stability : stable
-- Portability : portable
--
-- The Prelude: a standard module. The Prelude is imported by default
-- into all Haskell modules unless either there is an explicit import
-- statement for it, or the NoImplicitPrelude extension is enabled.
--
-----------------------------------------------------------------------------
module Prelude (
-- * Standard types, classes and related functions
-- ** Basic data types
Bool(False, True),
(&&), (||), not, otherwise,
Maybe(Nothing, Just),
maybe,
Either(Left, Right),
either,
Ordering(LT, EQ, GT),
Char, String,
-- *** Tuples
fst, snd, curry, uncurry,
-- ** Basic type classes
Eq((==), (/=)),
Ord(compare, (<), (<=), (>=), (>), max, min),
Enum(succ, pred, toEnum, fromEnum, enumFrom, enumFromThen,
enumFromTo, enumFromThenTo),
Bounded(minBound, maxBound),
-- ** Numbers
-- *** Numeric types
Int, Integer, Float, Double,
Rational, Word,
-- *** Numeric type classes
Num((+), (-), (*), negate, abs, signum, fromInteger),
Real(toRational),
Integral(quot, rem, div, mod, quotRem, divMod, toInteger),
Fractional((/), recip, fromRational),
Floating(pi, exp, log, sqrt, (**), logBase, sin, cos, tan,
asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh),
RealFrac(properFraction, truncate, round, ceiling, floor),
RealFloat(floatRadix, floatDigits, floatRange, decodeFloat,
encodeFloat, exponent, significand, scaleFloat, isNaN,
isInfinite, isDenormalized, isIEEE, isNegativeZero, atan2),
-- *** Numeric functions
subtract, even, odd, gcd, lcm, (^), (^^),
fromIntegral, realToFrac,
-- ** Semigroups and Monoids
Semigroup((<>)),
Monoid(mempty, mappend, mconcat),
-- ** Monads and functors
Functor(fmap, (<$)), (<$>),
Applicative(pure, (<*>), (*>), (<*)),
Monad((>>=), (>>), return),
MonadFail(fail),
mapM_, sequence_, (=<<),
-- ** Folds and traversals
Foldable(elem, -- :: (Foldable t, Eq a) => a -> t a -> Bool
-- fold, -- :: Monoid m => t m -> m
foldMap, -- :: Monoid m => (a -> m) -> t a -> m
foldr, -- :: (a -> b -> b) -> b -> t a -> b
-- foldr', -- :: (a -> b -> b) -> b -> t a -> b
foldl, -- :: (b -> a -> b) -> b -> t a -> b
-- foldl', -- :: (b -> a -> b) -> b -> t a -> b
foldr1, -- :: (a -> a -> a) -> t a -> a
foldl1, -- :: (a -> a -> a) -> t a -> a
maximum, -- :: (Foldable t, Ord a) => t a -> a
minimum, -- :: (Foldable t, Ord a) => t a -> a
product, -- :: (Foldable t, Num a) => t a -> a
sum), -- :: Num a => t a -> a
-- toList) -- :: Foldable t => t a -> [a]
Traversable(traverse, sequenceA, mapM, sequence),
-- ** Miscellaneous functions
id, const, (.), flip, ($), until,
asTypeOf, error, errorWithoutStackTrace, undefined,
seq, ($!),
-- * List operations
List.map, (List.++), List.filter,
List.head, List.last, List.tail, List.init, (List.!!),
Foldable.null, Foldable.length,
List.reverse,
-- *** Special folds
Foldable.and, Foldable.or, Foldable.any, Foldable.all,
Foldable.concat, Foldable.concatMap,
-- ** Building lists
-- *** Scans
List.scanl, List.scanl1, List.scanr, List.scanr1,
-- *** Infinite lists
List.iterate, List.repeat, List.replicate, List.cycle,
-- ** Sublists
List.take, List.drop,
List.takeWhile, List.dropWhile,
List.span, List.break,
List.splitAt,
-- ** Searching lists
Foldable.notElem,
List.lookup,
-- ** Zipping and unzipping lists
List.zip, List.zip3,
List.zipWith, List.zipWith3,
List.unzip, List.unzip3,
-- ** Functions on strings
List.lines, List.words, List.unlines, List.unwords,
-- * Converting to and from @String@
-- ** Converting to @String@
ShowS,
Show(showsPrec, showList, show),
shows,
showChar, showString, showParen,
-- ** Converting from @String@
ReadS,
Read(readsPrec, readList),
reads, readParen, read, lex,
-- * Basic Input and output
IO,
-- ** Simple I\/O operations
-- All I/O functions defined here are character oriented. The
-- treatment of the newline character will vary on different systems.
-- For example, two characters of input, return and linefeed, may
-- read as a single newline character. These functions cannot be
-- used portably for binary I/O.
-- *** Output functions
putChar,
putStr, putStrLn, print,
-- *** Input functions
getChar,
getLine, getContents, interact,
-- *** Files
FilePath,
readFile, writeFile, appendFile, readIO, readLn,
-- ** Exception handling in the I\/O monad
IOError, ioError, userError,
) where
import Control.Monad
import System.IO
import System.IO.Error
import qualified Data.List as List
import Data.Either
import Data.Foldable ( Foldable(..) )
import qualified Data.Foldable as Foldable
import Data.Functor ( (<$>) )
import Data.Maybe
import Data.Traversable ( Traversable(..) )
import Data.Tuple
import GHC.Base hiding ( foldr, mapM, sequence )
import Text.Read
import GHC.Enum
import GHC.Num
import GHC.Real
import GHC.Float
import GHC.Show
|
