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Within LTS Haskell 24.32 (ghc-9.10.3)
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readMaybe :: (PrimMonad m, Unbox a) => MVector (PrimState m) a -> Int -> m (Maybe a)rebase Rebase.Data.Vector.Unboxed.Mutable No documentation available.
readEither :: Read a => String -> Either String arebase Rebase.Prelude 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"
readFile :: FilePath -> IO Stringrebase Rebase.Prelude The readFile function reads a file and returns the contents of the file as a string. The file is read lazily, on demand, as with getContents.
readIO :: Read a => String -> IO arebase Rebase.Prelude The readIO function is similar to read except that it signals parse failure to the IO monad instead of terminating the program.
readList :: Read a => ReadS [a]rebase Rebase.Prelude 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.
readListPrec :: Read a => ReadPrec [a]rebase Rebase.Prelude 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.
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rebase Rebase.Prelude readMaybe :: Read a => String -> Maybe arebase Rebase.Prelude 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
readP_to_Prec :: (Int -> ReadP a) -> ReadPrec arebase Rebase.Prelude No documentation available.
readParen :: Bool -> ReadS a -> ReadS arebase Rebase.Prelude readParen True p parses what p parses, but surrounded with parentheses. readParen False p parses what p parses, but optionally surrounded with parentheses.