2 Apr
2011
2 Apr
'11
3:54 a.m.
On 1 April 2011 21:59, Dmitry Olshansky
Is it possible to change enumFile to using MonadIO class?
No because it uses the control operation Control.Exception.finally :: IO a -> IO b -> IO a internally. You can't lift control operations with liftIO :: MonadIO m => IO a -> m a. However if you are able to define a MonadTransControl and MonadControlIO instance (from the monad-control package[1]) for Iteratee and use Control.Exception.Control.finally instead of the regular finally, you can use your MyMonad with the modified enumFile. Good luck, Bas [1] http://hackage.haskell.org/package/monad-control