On Sat, 8 Mar 2008, Denis Bueno wrote:
On Sat, Mar 8, 2008 at 12:29 AM, Xiao-Yong Jin <[EMAIL PROTECTED]> wrote:
I'm using STUArray in some of my time critical number
crunching code. I would like to know some way to catch the
exceptions raised in the ST monad, ie. ArrayException.
I am also using STUArray from some time-critical code; however, I
don't deal with ArrayException, or any exceptions for that matter.
What besides an out-of-bounds read or write might throw an
ArrayException? If it is out-of-bounds reading or writing, surely
that indicates a bug in your program that you'd rather fix than catch
the exception, no?
Another instance of mixing up exceptions and errors in the Haskell
libraries.
http://www.haskell.org/haskellwiki/Error
http://www.haskell.org/haskellwiki/Exception
Also, if you're using GHC, note that the ArrayException documentation says:
"(NOTE: GHC currently does not throw ArrayExceptions)."
Looking through the Control.Exception module, I understand
that those functions can only be used within IO monad. So
This isn't quite true, if I understand what you mean. The function
throw can be used from any code
(http://haskell.org/ghc/docs/latest/html/libraries/base/Control-Exception.html).
But you must catch exceptions in the IO monad.
my question is, what the best way to do exception handling
in STUArray is. Plus, it would be helpful if I can also
raise an exception in ST monad, but how?
I think what I noted in the last paragraph solves this problem.
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
