[erlang-questions] Unexpected try/catch behaviour
Wed Feb 24 01:05:17 CET 2010
On Wed, Feb 24, 2010 at 12:11 AM, Richard O'Keefe <ok@REDACTED> wrote:
> I had forgotten about try...of...catch...end.
> When is it appropriate to use try E of H catch ... end
> instead of try case E of H end catch ... end?
> I think the _intent_ is clear, that in try E ... end
> it is *only* E that is protected.
> It does make sense, but it would be really nice to see
> a couple of examples where try .. of .. catch .. end was
> the right thing to do.
How about when you need to catch a specific event?
try ets:slot(Table, SlotNumber) of
% We get badarg when the slot number was higher than the total
% number of slots. This can happen if someone deleted items from
% the table while we were traversing it. No worries.
I don't want to accidentally catch a badarg in do_stuff/1 here.
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