r/cpp • u/we_are_mammals • 7d ago

cpp2 (cppfront) is over?

I haven't used cpp2 (cppfront) much, but I like the idea of it: consistent syntax, consistency of meta-programming (which is done in C++ too, I believe). Herb Sutter presented cpp2 (cppfront) as an experiment. He did not encourage other people to bet on it, exactly. And there hasn't been much activity since 2022. Is the experiment over?

EDIT: Herb's answer is buried deep in the comment section: https://www.reddit.com/r/cpp/comments/1uxkglj/comment/oy06cxw/

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u/pjmlp 6d ago

Neither of them are proposals to specific ISO C++ versions.

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u/friedkeenan 6d ago

You do realize that that is moving the goalposts and as well has little to do with the intention of cppfront, right? Or am I wrong in understanding "proposals to specific ISO C++ versions" to mean "proposals which were accepted to the C++ standard"?

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u/pjmlp 6d ago

None at all, those papers have zero value to C++ language improvements, as they were never submitted to voting.

They have as much value to ISO C++ as papers produced by a random dude on Reddit, and I am willing to bet none of that will ever appear in ISO C++.

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u/friedkeenan 6d ago

Ok, man. I'm not going to get into a discussion vortex with you where we just waste each other's time, but I have to think that you realize that my saying "cppfront is intended to feed back into C++ and serve as a reference for proposals to C++" is not at all contradicted by Herb's proposals using it not yet being accepted into the standard. And that your saying "never were any paper out of it" is contradicted by there being... papers out of it.

I do have to admit too that I'm somewhat surprised by your spurning cppfront being used as references for proposals, when you at other times appear eager to deride the committee for accepting proposals which did not come with a reference implementation. Seems like Herb using cppfront as a reference implementation for his proposals would align with your desires for the proposal process, but maybe I'm missing something.

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u/pjmlp 6d ago

Except those papers never became proper proposals.

You would be right if cpp2 experiment actually turned into proper mailing papers submitted for voting into a specific ISO C++ version.

Which they never did and most likely never will.

They stayed into the realm of "look at this cool idea", right then what?