What do you mean by C++ interoperability (re Rust)? As far as I was able to determine a couple of months ago, there isn't really a good way of doing interop exc

What do you mean by C++ interoperability (re Rust)? As far as I was able to determine a couple of months ago, there isn't really a good way of doing interop except by going through a C shim. The case I was analysing was Qt C++ UI plus Rust library. There's a Rust text editor (xi?) which is using JSON to communicate between the UI and the core. In that case I believe it was designed like that to allow for different UIs, but it looks more appealing than the C interface.