The new standard is upon us and it'll be massive. It indeed looks like another C++11. If used it'll feel like a very different language.

Interestingly the issue for the compile time is not so much the feature itself but the STL headers required. It makes PCH pretty much mandatory.

Looking at several languages and their reflection features. What's coming with C++26 is really something of another class than anything else. I just have concerned about its readability though.

OK the coming compile time reflection features coming with C++26 are definitely mind blowing. It really opens the door toward a very different evolutionary path for C++. Many things can be done from libraries now and producing bindings to other languages shall become much simpler to.

Now it's once again about adding more to the language... This makes the question of how to extract a safer and leaner subset even more important. It's also asking for more tooling to support it, like the constexpr debugger mentioned during the questions.

We can expect this to be a game changer for the C++ ecosystem. A couple of examples are presented in this article.

Compile time reflection in C++ will indeed be a big deal.