[Python-Dev] Proposal: dict.with_values(iterable)
On Tue, Apr 23, 2019 at 11:30 AM Steve Dower <steve.dower at python.org> wrote:
> Or possibly just "dict(existing_dict).update(new_items)".
Do you mean .update accepts values tuple?
I can't think it's
> My primary concern is still to avoid making CPython performance
> characteristics part of the Python language definition. That only makes
> it harder for alternate implementations.
Note that this proposal is not only for key sharing dict:
* We can avoid rebuilding hash table again and again.
* We can avoid checking duplicated keys again and again.
These characteristics are not only for Python, but for all mapping
implementations using hash table.
Inada Naoki <songofacandy at gmail.com>