Hi,
we have multiple ways to test whether a Handle is valid. I've
encountered the followings
1. if (h) then ...
2. if (h != nullptr) then ...
3. if (h.is_defined()) then ...
4. if (h != Handle::UNDEFINED) then ...
there might be more but that's the ones I can recall.
First question: Are they all strictly equivalent?
Second question: can we agree on a canonical way to do that and stick
with it?
Since `if (h)` is the shortest I would suggest to go with that, but
there might be reasons to go with something else, like more long term
reasons, etc.
I'll update the wikipage with the conclusion of this thread. Thanks for
you help.
Nil
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