On Thu, Apr 10, 2008 at 2:50 PM, Adam Smyczek <adam.smyczek@gmail.com> wrote:

For a small webapi binding I try to implement a session like monad

 by building a stack including BrowserAction from Network.Browser

 module as following:

 newtype RBAction a = RBAction

    { exec :: ErrorT String (StateT RBState BrowserAction) a }

    deriving (Functor, Monad, MonadState RBState)

 I would like the RBAction to implement MonadIO as well,

 but fight with the liftIO function for hours now, without success.

 Any idea how the implementation of liftIO could look like?

I suspect BrowserAction does not implement MonadIO (lest you could

just put MonadIO in the deriving clause).  So, that depends on how

BrowserAction is implemented.  What package is Network.Browser in?

Luke