Is removing elements of AA in foreach loop safe?
snarwin at gmail.com
Fri Aug 30 15:00:59 UTC 2019
On Friday, 30 August 2019 at 13:43:54 UTC, XavierAP wrote:
> On Thursday, 29 August 2019 at 10:11:58 UTC, berni wrote:
>> Iterating of some structure and removing elements thereby is
>> always errorprone and should be avoided. But: In case of AA,
>> I've got the feeling, that it might be safe:
>>> foreach (k,v;ways)
>>> if (v.empty)
>> Do you agree? Or is there a better way to achieve this?
> It compiles and it runs without throwing any RangeError... So
> it appears to be safe. Otherwise it'd be a bug that there's not
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 .
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