[Haskell-cafe] Problem about exception.

[Brandon S Allbery KF8NH]

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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]      allbery at kf8nh.com
system administrator  [openafs,heimdal,too many hats]  allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university      KF8NH
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