parsec-3.0.0: Monadic parser combinators

Portabilityportable
Stabilityprovisional
Maintainerderek.a.elkins@gmail.com

Text.Parsec.ByteString.Lazy

Description

Make lazy ByteStrings an instance of Stream with Char token type.

Synopsis

Documentation

parseFromFile :: Parser a -> String -> IO (Either ParseError a)Source

parseFromFile p filePath runs a lazy bytestring parser p on the input read from filePath using ByteString.Lazy.Char8.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)
              }