[jeff-davis]

There aren't many pairs of mainstream languages that really interoperate well together. C and C++ do, which can blur the lines a bit. Not sure if this is what the author meant.

With rust growing in popularity and good interoperability, I suspect we'll see the rise of projects written in C/Rust and C++/Rust, and maybe even C/C++/Rust. The line will obviously be more clear because of dramatically different syntax, packaging, build system, etc.

[v8dev123]

My issue was "/" and I'd be fine if he had used "C, C++" or "C & C++"

[jeff-davis]

Does "/" have a concrete meaning? I vaguely think it means "with" or "and" or "or", but it seems more ambiguous.

[v8dev123]

It's ambiguous and not clear to reader!