Exceptions handling
- Subject: [mg3320] Exceptions handling
- From: fdupont at irisa.fr (Florent Dupont-De-Dinechin)
- Date: 26 Feb 1996 14:06:12 -0600
- Approved: usenet@wri.com
- Distribution: local
- Newsgroups: wri.mathgroup
- Organization: IRISA, Campus de Beaulieu, 35042 Rennes Cedex, FRANCE
- Sender: daemon at wri.com
We are developping a relatively big program transformation environment
in Mathematica, and we are wondering what is the best way
of handling errors. Problems occur when a the evaluation of some function
is blocked for some reason (in relation with an error in the input).
The caller function gets a whole expression tree instead of getting
the expected result, which causes even more errors, and so on.
Currently we use various combinations of Catch/Throw, Message/Check
and strong type checking to handle these problems, but the result is quite
inconsistent and definitely not idiot-proof, and it is getting worse
as the size of the system increases (as one may expect).
Is there an "official" way of correctly handling exceptions ? We are looking
for something like "good programming habits", from the litterature or
other users' personal experience.
Thanks in advance,
Florent
"Reality shouldn't constraint our formalisms."
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Florent de Dinechin. Equipe Architectures Paralleles Integrees
IRISA, Campus de Beaulieu, F-35042 Rennes, France
tel: (33) 99 84 74 56 e-mail: fdupont at irisa.fr
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"Dans toute entreprise serieuse, l'intelligence est un don negligeable."