Can we enable -preview=rvaluereference now?

[Manu]

On Sat, 17 Aug 2024, 09:36 Quirin Schroll via Digitalmars-d, <
digitalmars-d at puremagic.com> wrote:

> On Tuesday, 13 August 2024 at 04:23:15 UTC, Manu wrote:
> > So this preview has been available for more than 5 years.
> > Andrei did a keynote on it, and that seemed generally well
> > received (if not
> > a little tepid, because not so many people care about this).
> > All the code I've written in the last 5 years doesn't work
> > without this.
> > I have exercised this pretty extensively in whatever flavour of
> > code it is
> > that I tend to write, and never had any problem. It works like
> > it's meant
> > to.
> > I would severely struggle to return to a D without it.
> >
> > Can we un-preview this now?
>
> Can we please remove it? It's a silent breaking change as it
> changes the semantics of every function that has `ref` parameters
> with the implicit or explicit understanding that it can't take
> rvalues. Add `@universal ref`. It's a pure addition and wouldn't
> break code. Manu and others could just search and replace `ref`
> by `@universal ref` and be happy. Changing `ref` to make it take
> rvalues never was a good idea.
>

Remove it? What harm has it caused you?
You'll need to substantiate these claims? You're wrong on all accounts by
my experience and reckoning.

I've been using it for 5 years and all my code would fail without it,
several others at the top of this thread also said the same thing. I have
never experienced an issue or anything related to it that caused something
like "silent breakage".
I exercise the language pretty intensely, more so than most.

I think you need to present a rock solid case to invalidate half a decade
of several people's work, and you'll have to do better then "I don't care
for that in theory", or "the idea kind-of makes me nervous despite never
having turned the flag on and having literally no experience with it one
way or the other"...

>
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