[wolf550e]

You are putting words in my mouth. I did not say "should not be used". I wrote about my option and what I do. I did not mean this advice applies to everyone in every situation.

I think your approach is "default to C++ because of very broad support, write the cold code and the hot code in C++, optimize the hot code" and implicitly you also say "and damn the security and maintainability implications".

My approach is "use the safest and most maintainable language for all code that can tolerate the performance impact", so I would prefer to write everything in a higher level language than C++ and optimize using cffi, asm, etc. only the inner most loop.

Maybe modern C++ can overcome the weight of backwards compatibility and create a truly modern subset that is as safe and as pleasant to work with as newer languages. Then your approach would definitely be better. But I don't think we're there.

For example, I think of things like a web server, where the AES-GCM has to be assembly, the HTTP parser should be generated by a special tool and the rest should be in a memory safe language to avoid Cloudbleed. Can modern C++ be that memory safe language? If yes, I'm wrong.