Comment by nyanpasu64

Agreed. If I could retroactively alter Rust's design, I'd remove non-marker traits with methods, and instead have functions and data structures take method or vtable pointers. In case of static dispatch, the method pointers would be passed as compile-time const generic parameters. This allows picking different ordering operators for different trees or sorts defined on the same type, instead of requiring wrapper types defining custom comparison operators, or having individual types or functions add comparator parameters in an ad-hoc fashion (https://doc.rust-lang.org/std/primitive.slice.html#method.so...).