module Prelude (
- -- * Basic data types
+ -- * 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, Int, Integer, Float, Double, IO,
- Rational,
+ Char, String,
+
+ -- *** Tuples
+ fst, snd, curry, uncurry,
+
#if defined(__NHC__)
[]((:), []), -- Not legal Haskell 98;
-- ... available through built-in syntax
(:), -- Not legal Haskell 98
#endif
- -- * Basic type classes
+ -- ** Basic type classes
Eq((==), (/=)),
Ord(compare, (<), (<=), (>=), (>), max, min),
Enum(succ, pred, toEnum, fromEnum, enumFrom, enumFromThen,
enumFromTo, enumFromThenTo),
Bounded(minBound, maxBound),
- -- * Numeric type classes
+ -- ** Numbers
+
+ -- *** Numeric types
+ Int, Integer, Float, Double,
+ Rational,
+
+ -- *** Numeric type classes
Num((+), (-), (*), negate, abs, signum, fromInteger),
Real(toRational),
Integral(quot, rem, div, mod, quotRem, divMod, toInteger),
encodeFloat, exponent, significand, scaleFloat, isNaN,
isInfinite, isDenormalized, isIEEE, isNegativeZero, atan2),
+ -- *** Numeric functions
+ subtract, even, odd, gcd, lcm, (^), (^^),
+ fromIntegral, realToFrac,
+
+ -- ** Monads and functors
+ Monad((>>=), (>>), return, fail),
+ Functor(fmap),
+ mapM, mapM_, sequence, sequence_, (=<<),
+
+ -- ** Miscellaneous functions
+ id, const, (.), flip, ($), until,
+ asTypeOf, error, undefined,
+ seq, ($!),
+
-- * List operations
- map, (++), filter, concat,
+ map, (++), filter,
head, last, tail, init, null, length, (!!),
- foldl, foldl1, scanl, scanl1, foldr, foldr1, scanr, scanr1,
+ reverse,
+ -- ** Reducing lists (folds)
+ foldl, foldl1, foldr, foldr1,
+ -- *** Special folds
+ and, or, any, all,
+ sum, product,
+ concat, concatMap,
+ maximum, minimum,
+ -- ** Building lists
+ -- *** Scans
+ scanl, scanl1, scanr, scanr1,
+ -- *** Infinite lists
iterate, repeat, replicate, cycle,
+ -- ** Sublists
take, drop, splitAt, takeWhile, dropWhile, span, break,
- reverse, and, or,
- any, all, elem, notElem, lookup,
- maximum, minimum, concatMap,
+ -- ** Searching lists
+ elem, notElem, lookup,
+ -- ** Zipping and unzipping lists
zip, zip3, zipWith, zipWith3, unzip, unzip3,
-
+ -- ** Functions on strings
lines, words, unlines, unwords,
- sum, product,
-- * Converting to and from @String@
ReadS, ShowS,
reads, shows, read, lex,
showChar, showString, readParen, showParen,
- -- * Simple I\/O operations
- ioError, userError, catch,
- FilePath, IOError,
+ -- * 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,
-
- -- * Monads
- Monad((>>=), (>>), return, fail),
- Functor(fmap),
- mapM, mapM_, sequence, sequence_, (=<<),
-
- -- * Miscellaneous functions
- maybe, either,
- (&&), (||), not, otherwise,
- subtract, even, odd, gcd, lcm, (^), (^^),
- fromIntegral, realToFrac,
- fst, snd, curry, uncurry,
- id, const, (.), flip, ($), until,
- asTypeOf, error, undefined,
- seq, ($!)
+ -- ** Exception handling in the I\/O monad
+ IOError, ioError, userError, catch
) where
import GHC.Real
import GHC.Float
import GHC.Show
-import GHC.Conc
import GHC.Err ( error, undefined )
#endif