On Mon, 17 Jan 2022 at 10:12, Steven D'Aprano <st...@pearwood.info> wrote:
> That would make the creation of frozensets more efficient, possibly
> encourage people who currently are writing slow and inefficient code
> like
>
> targets = (3, 5, 7, 11, 12, 18, 27, 28, 30, 35, 57, 88)
> if n in targets:
> do_something()
>
> to use a frozenset, as they probably should already be doing.
More realistically, would they not use a set already, as in
targets = {3, 5, 7, 11, 12, 18, 27, 28, 30, 35, 57, 88}
if n in targets:
do_something()
?
Is using a frozenset a significant improvement for that case? Because
I doubt that anyone currently using a tuple would suddenly switch to a
frozenset, if they haven't already switched to a set. Sure, there
might be the odd person who sees the release notes and is prompted by
the mention of frozenset literals to re-think their code, but that's
probably a vanishingly small proportion of the audience for this
change.
BTW, I should say that I'm actually +0.5 on the idea. It seems like a
reasonable thing to want, and if an acceptable syntax can be found,
then why not? But I doubt it's going to have a major impact either
way.
Paul
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