| Copyright | (c) Paolo Martini 2007 |
|---|---|
| License | BSD-style (see the file libraries/parsec/LICENSE) |
| Maintainer | derek.a.elkins@gmail.com |
| Stability | provisional |
| Portability | portable |
| Safe Haskell | None |
| Language | Haskell2010 |
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)
}