[Haskell-cafe] Re: Control.Exceptions and MonadIO

[Brian Hulley]

Brian Hulley wrote:
> instance MonadIOE m => StateT s m where ...
> instance MonadIOE m => ReaderT r m where ...
> 
> instance MonadIOB m => ReaderT r m where ...

Ooops! ;-)

instance MonadIOE m => MonadIOE (StateT s m) where ...
instance MonadIOE m => MonadIOE (ReaderT r m) where ...

instance MonadIOB m => MonadIOB (ReaderT r m) where ...