not on Mac/I/watch/tvOS where much of the core platform API is objective-c (Which swift has first class support for), and C++ (because of poor 90s decisions).

not on Mac/I/watch/tvOS where much of the core platform API is objective-c (Which swift has first class support for), and C++ (because of poor 90s decisions). But also missing the point that you can't implement a subclass or what have you in rust, and if every interface you have is C then you have an exercise in mass unsafe code.