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Alan Campin wrote:
Also, about returning a pointer from a service program.
I would consider this to be bad practice no matter what. The pointer can
be used to do anything and exposes the internals of your service
program.
Returning a handle that points into an array is always a much better way
Everything is managed and hidden in the service program.
It seems to me like using a handle instead of a pointer adds unnecessary
complexity. If you can't trust the consumers of your service program
not to mess with the data when given a pointer, what's to stop them from
making up handle values to mess with other lists?
I can see a case for designing a more secure handle if the software will
be widely distributed, or if the results of someone messing with the
service program internals could be particularly disastrous. Otherwise,
it seems to me like an awful lot of work for not a lot of gain.
I'd be really interested in arguments as to why handles are really
better. I'm most likely missing something that more experience could
illuminate.
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