2 Feb
2009
2 Feb
'09
5:41 p.m.
On Mon, Feb 2, 2009 at 8:50 PM, Reid Barton
On Mon, Feb 02, 2009 at 06:03:15PM +0100, Josef Svenningsson wrote:
Hi Tyson,
I also needed something like this a while ago so I knocked up a really simple module and put it on hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/STMonadTrans
Warning! The STMonadTrans package uses State# nonlinearly, and as a result, can violate referential transparency:
Indeed, thanks for pointing this out. I really should have a warning sign on the package saying that it only works for certain monads. Cheers, /Josef