As I don't know Rust, honest question here, just to help me understand..

The `pins.d13.into_input();` part just returns an object/reference/... of a type that only has input-specific methods, while using `.into_output()` would do the same with only output-specific methods, correct? That's nice, but why couldn't you do the same thing in C++?

With a dependent type you could do `pins.d13.into(INPUT)` and get the input-specific type, but that seems to not be something Rust could do?