Hey, I know those people! Wish I was going to be there this year. Hopefully next year!

Sure, too late for that, and yeah it makes sense that you wouldn't want people doing that to pick up a pre-release language version.

What about my idea in the later reply, of making net10.0 have a default of preview in the pre-RC period, which would then have no impact on users of latest?

Because that would potentially opt in to unreleased features which we don't want to do once we're using RTM bits. For example, using field in properties shipped as preview in the C# 13.0 time frame.

What if targeting net10.0 had a default LangVersion of preview before it changed to 14.0? That seems to give what I'd want the behavior to be without it also impacting other TFMs negatively by default.

I suppose if setting LangVersion to latest would mean it would get picked up, then you might run into problems that way, but that's already a bad idea (as the docs point out).

We use a global.json locked to a major with rollForward set to latestFeature, so we won't pick up a preview automatically. However, even if we didn't have the file, projects using the preview SDK still wouldn't get 14.0 automatically unless we are targeting net10.0 in those projects.

Thanks for the info, btw. That at least gives us a way forward, even it's not ideal for our situation.

Without needing an extra opt-in step on top of all the other things I've just done to opt in to prerelease stuff.

I feel like if you're already opting in to using the preview SDK and the prerelease .NET target, it's fine to use the preview of the LangVersion it's going to ship with.

Since that results in us then having to go back and rip it back out later.

I guess that makes sense, but for us that results in a lot of extra cleanup work. We try to align releases with the .NET schedule, so we are prepping repos now. We are already targeting net10.0 with preview SDK, we want 14.0 already and kind of sucks to have to also set preview separately.

Interesting! Wordpress really can do everything!

Cool, what language / libraries did you use for it?

That reminds me that I still need to book my flights. I should definitely do that this weekend!

FYI The link is broken.

That's a good point!

I had the same initial reaction, but then remembered the ending of Tron: Legacy already set the precedent.

But when can I escape? Please I need to get out of here.

What a coincidence, I was just thinking that it was about time for another Keyfall. Wise vislae would do well to pay attention.