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Within LTS Haskell 24.32 (ghc-9.10.3)
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readPrec_to_S :: ReadPrec a -> Int -> ReadS aghc-internal GHC.Internal.Text.ParserCombinators.ReadPrec No documentation available.
readS_to_Prec :: (Int -> ReadS a) -> ReadPrec aghc-internal GHC.Internal.Text.ParserCombinators.ReadPrec No documentation available.
readEither :: Read a => String -> Either String aghc-internal GHC.Internal.Text.Read Parse a string using the Read instance. Succeeds if there is exactly one valid result. A Left value indicates a parse error.
>>> readEither "123" :: Either String Int Right 123
>>> readEither "hello" :: Either String Int Left "Prelude.read: no parse"
readList :: Read a => ReadS [a]ghc-internal GHC.Internal.Text.Read The method readList is provided to allow the programmer to give a specialised way of parsing lists of values. For example, this is used by the predefined Read instance of the Char type, where values of type String are expected to use double quotes, rather than square brackets.
readListDefault :: Read a => ReadS [a]ghc-internal GHC.Internal.Text.Read A possible replacement definition for the readList method (GHC only). This is only needed for GHC, and even then only for Read instances where readListPrec isn't defined as readListPrecDefault.
readListPrec :: Read a => ReadPrec [a]ghc-internal GHC.Internal.Text.Read Proposed replacement for readList using new-style parsers (GHC only). The default definition uses readList. Instances that define readPrec should also define readListPrec as readListPrecDefault.
readListPrecDefault :: Read a => ReadPrec [a]ghc-internal GHC.Internal.Text.Read A possible replacement definition for the readListPrec method, defined using readPrec (GHC only).
readMaybe :: Read a => String -> Maybe aghc-internal GHC.Internal.Text.Read Parse a string using the Read instance. Succeeds if there is exactly one valid result.
>>> readMaybe "123" :: Maybe Int Just 123
>>> readMaybe "hello" :: Maybe Int Nothing
readParen :: Bool -> ReadS a -> ReadS aghc-internal GHC.Internal.Text.Read readParen True p parses what p parses, but surrounded with parentheses. readParen False p parses what p parses, but optionally surrounded with parentheses.
readPrec :: Read a => ReadPrec aghc-internal GHC.Internal.Text.Read Proposed replacement for readsPrec using new-style parsers (GHC only).