On Mon, Oct 5, 2009 at 10:54 PM, Floptical Logic <[email protected]> wrote: > > If I were to make an instance of MonadIO be a parameter to StateT and > I wanted to use the Net monad (from Roll your own IRC bot on the wiki) > with it, I would need to make Net an instance of MonadIO. What would > this instance look like?
If you define 'Net' as in the tutorial above, it will already be an instance of MonadIO :-) > I think the loop function is the least of my worries. I am more > concerned about the runCmd function. What would go in place of print > in runCmd? The function 'liftIO . print' will work in any monad which is an instance of MonadIO. Take a look at http://hackage.haskell.org/packages/archive/mtl/1.1.0.2/doc/html/Control-Monad-Trans.html#v:liftIO for where 'liftIO' comes from. Antoine _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
