18 Feb
2009
18 Feb
'09
6:40 p.m.
On Mon, 16 Feb 2009, Louis Wasserman wrote:
Overnight I had the following thought, which I think could work rather well. The most basic implementation of the idea is as follows:
class MonadST s m | m -> s where liftST :: ST s a -> m a
instance MonadST s (ST s) where ... instance MonadST s m => MonadST ...
Like MonadIO, isn't it?