On Thu, Jan 27, 2011 at 11:09 AM, Brandon S Allbery KF8NH <allber...@gmail.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 1/26/11 22:02 , Magicloud Magiclouds wrote: >> Sorry, in last mail, I meant, in really wrong situation, there might >> be other tens of unexpected command, I'd like to wrap them in one >> exception, other than making tens of exceptions. > > I'm not sure you can get away with that in a monadic computation, unless you > hold all the exceptions until everything is done... and if there's no way to > control "everything is done" you have a potential DoS. (Worse, it looked to > me like one of those ControlExceptiion-s *was* the "everything is done", > which makes holding onto things problematic plus makes me wonder what good > the debug message is if it's batched until protocol shutdown. > > - -- > brandon s. allbery [linux,solaris,freebsd,perl] allb...@kf8nh.com > system administrator [openafs,heimdal,too many hats] allb...@ece.cmu.edu > electrical and computer engineering, carnegie mellon university KF8NH > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (Darwin) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk1A4e0ACgkQIn7hlCsL25X8lQCbBrKO5Lmwazn9025FcDlZ8DYH > 2BEAoKuc6bVOH3gG13aa9OUkBoCCmLiP > =0NWM > -----END PGP SIGNATURE----- >
Yes, the problem is that Exception cannot hold anything in it. Things like Either might work. I am thinking how to make it work with StateT.... -- 竹密岂妨流水过 山高哪阻野云飞 _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
