|
| Text.Read | | Portability | portable | | Stability | provisional | | Maintainer | libraries@haskell.org |
|
|
|
|
| Contents |
- The Read class
- Haskell 98 functions
- New parsing functions
|
|
| Description |
| The Text.Read library is the canonical library to import for
Read-class facilities. It offers an extended and much improved
Read class, which constitutes a proposed alternative to the
Haskell98 Read. In particular, writing parsers is easier, and
the parsers are much more efficient.
|
|
| Synopsis |
|
|
|
|
| The Read class |
|
| class Read a where |
| | Methods | | | | Instances | | Read CChar | | Read CSChar | | Read CUChar | | Read CShort | | Read CUShort | | Read CInt | | Read CUInt | | Read CLong | | Read CULong | | Read CLLong | | Read CULLong | | Read CFloat | | Read CDouble | | Read CLDouble | | Read CPtrdiff | | Read CSize | | Read CWchar | | Read CSigAtomic | | Read CClock | | Read CTime | | Read Int8 | | Read Int16 | | Read Int32 | | Read Int64 | | Read Char | | Read Bool | | Read Ordering | | (Read a) => Read (Maybe a) | | (Read a, Read b) => Read (Either a b) | | (Read a) => Read [a] | | (Ix a, Read a, Read b) => Read (Array a b) | | Read Lexeme | | Read Int | | Read Integer | | Read Float | | Read Double | | (Integral a, Read a) => Read (Ratio a) | | Read () | | (Read a, Read b) => Read (a, b) | | (Read a, Read b, Read c) => Read (a, b, c) | | (Read a, Read b, Read c, Read d) => Read (a, b, c, d) | | (Read a, Read b, Read c, Read d, Read e) => Read (a, b, c, d, e) | | Read Word | | Read Word8 | | Read Word16 | | Read Word32 | | Read Word64 | | Read StdGen |
|
|
|
| type ReadS a = String -> [(a, String)] |
| A parser for a type a, represented as a function that takes a
String and returns a list of possible parses (a,String) pairs. |
|
| Haskell 98 functions |
|
| reads :: (Read a) => ReadS a |
|
| read :: (Read a) => String -> a |
|
| readParen :: Bool -> ReadS a -> ReadS a |
|
| lex :: ReadS String |
|
| New parsing functions |
|
| module Text.ParserCombinators.ReadPrec |
|
| data Lexeme |
|
|
| lexP :: ReadPrec Lexeme |
| Parse a single lexeme |
|
| readListDefault :: (Read a) => ReadS [a] |
| Use this to define the readList method, if you
don't want a special case |
|
| readListPrecDefault :: (Read a) => ReadPrec [a] |
| Use this to define the readListPrec method, if you
don't want a special case |
|
| Produced by Haddock version 0.4 |