Is removing elements of AA in foreach loop safe?
someone at somewhere.com
Fri Aug 30 16:45:20 UTC 2019
On Friday, 30 August 2019 at 15:00:59 UTC, Paul Backus wrote:
> Whether you actually get an error at runtime depends on the
> load factor of the AA. If it drops below a certain threshold,
> the AA will be resized , and its original memory will be
> freed .
It could still work, depending on how the foreach loop is
implemented. If the keys were stored away before starting the
loop it would work. But for one thing, it isn't implemented that
way and for the other, one shouldn't rely on it, because the
implementation could change. What I hoped for, was, that the
specs enforce somewhere, that this is to be implemented in a safe
I'll replace this loops by something better, e.g. the mentioned
filter. But I've never worked with AAs and filters yet. Will see,
if I manage to do that. Else I'll probably just copy the keys and
use them for an independent loop.
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