frozendict: an experiment

[Inada Naoki]

On Tue, Jul 21, 2020 at 5:07 AM Marco Sulla <elbarbun at gmail.com> wrote:
>
> I just finished to improve the performance of frozendict creation. The result is very promising.
>
> The speedup is about 30% for small dicts (8 items). For large dicts (1k items) is about 38% for dicts with only integers as keys and values, and 45% for dicts with only strings.

Do you mean `frozendict(d)` where d is frozendict?
If so, you don't need to create a new dict. You can just incref the d
and return it.
That is what we do in tuple and frozenset.

> I think the major speedup is due the fact I implemented the solution with a split dict, as suggested by Inada. Even if some of the improvements could be applied to dict too, combined dicts could be more efficient and easy to use for sorting, insertion and deletion.
>

Oh, I don't recommend split dict until you find use case that you can
share many keys.
In general, combined dict is little faster and much efficient.

-- 
Inada Naoki  <songofacandy at gmail.com>