On Thursday, 1 October 2020 at 20:40:39 UTC, Seb wrote:
On Thursday, 1 October 2020 at 18:29:14 UTC, Meta wrote:
I've read the discussion but skipped the presentation. All I
see is Atila expressing distaste for the compiler choosing how
to pass values, and no explicit sign-off from either Walter or
Atila before it was merged.
My objection is not to `in`'s new behaviour (although having
something that functions similarly to auto ref but in subtly
different ways is not good language design, IMO). My objection
is that we have a major change to a language feature, that was
merged without the apparent blessing of either of the two
people who are supposed to be the gatekeepers for these
decisions, and without a DIP (yes, it is behind -preview, but
that implies that this will eventually make it into the
language proper). That is what I am calling "ridiculous". If W
or A did approve it and I just wasn't aware, then I apologize
and retract my objection.
You seem to have a wrong understanding of -preview. It doesn't
even pretend to be an officially approved feature. I think this
is what's been causing the confusion.
Preview flags are what other compilers call "experimental". In
fact, -preview is intended to predate a DIP or formal approval
in other ways, because if you don't know the impact of a
feature or usefulness, it's very hard to make an informed
decision.
This has the nice side effect that sometimes it becomes clear
during an implementation that the idea as is unfeasible.
implies that this will eventually make it into the language
proper
No, it doesn't.
Okay, fair enough. Should this still not have had approval from
either Walter or Atila before being merged in? Or is that not the
case for changes behind -preview?
