G'day all. On Fri, Jan 31, 2003 at 09:08:22AM +0100, Ralf Hinze wrote:
> John Hughes wrote a nice pearl on the subject, see > > http://www.math.chalmers.se/~rjmh/Globals.ps Nice! Why isn't RefMonad in hslibs? Possibly because of the class signature: class Monad m => RefMonad m r | m -> r where {- etc -} It makes perfect sense for there to be more than one kind of "ref" for a given monad. Indeed, sometimes it's important. Quite often, I use a custom ref built on top of IORef which supports Ord, as this is needed for hash consing. Cheers, Andrew Bromage _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
