 | parsec-3.1.0: Monadic parser combinators | Source code | Contents | Index |
| Text.Parsec.String |
|
| type Parser = Parsec String () |
| type GenParser tok st = Parsec [tok] st |
| parseFromFile :: Parser a -> String -> IO (Either ParseError a) |
| type Parser = Parsec String () | Source |
| type GenParser tok st = Parsec [tok] st | Source |
| parseFromFile :: Parser a -> String -> IO (Either ParseError a) | Source |
parseFromFile p filePath runs a string parser p on the input read from filePath using readFile. Returns either a ParseError (Left) or a value of type a (Right).
main = do{ result <- parseFromFile numbers "digits.txt"
; case result of
Left err -> print err
Right xs -> print (sum xs)
}