Re: How expensive are exceptions?
on Sat Jun 16 2007, coal-AT-mailvault.com wrote:
When an error occurs I generally need to know how we got there and
that isn't the time to add code to provide context.
Really? I find the context is very rarely interesting except for
debugging purposes. The only time I need to know the context is when
I have a very specialized way to recover from one particular
condition. I can count the number of times that's come up for me on
one hand, and then it is usually dealt with so close to the point of
detection that I wouldn't be throwing an exception in the fist place.
Some problems are so difficult to reproduce you don't have that
luxury.
It sounds like the problems you're talking about are bugs.
Distinguishing between bugs and the sorts of things that one should
handle with exceptions is fundamental.
--
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com
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