On Saturday, 30 October 2021 at 00:52:23 UTC, Imperatorn wrote:
On Saturday, 30 October 2021 at 00:49:04 UTC, Stanislav Blinov
wrote:
On Friday, 29 October 2021 at 21:00:48 UTC, Steven
Schveighoffer wrote:
This is incorrect, the buckets are each heap allocated. Just
the array of bucket pointers would change.
In addition, AAs do not deallocate the key/value pairs ever.
You are safe to obtain a pointer to a value and it will stay
there, even if you remove the key.
Who's going to document these implementation details? ;) I
mean, if no one, then the above shouldn't be stated. Wouldn't
you agree?
Given the premise of the question at hand, it does seem useful
to know these. But at least one should stress what is and
isn't subject to change (even if unlikely).
This should be documented for sure
I did small test and it printed the same values three times so
even rehash doesn't change the address of the value:
```d
long[long] aa = [0:0];
writeln(&aa[0]);
foreach(i; 0 .. 100_000_000)
aa[i]=i;
writeln(&aa[0]);
aa.rehash;
writeln(&aa[0]);
```
So it seems pretty safe to store a pointer to a value in AA. And
I agree that this should definitely be documented.
