| Portability | portable | 
|---|---|
| Stability | provisional | 
| Maintainer | derek.a.elkins@gmail.com | 
| Safe Haskell | Safe-Infered | 
Text.Parsec.String
Documentation
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)
              }