It's not possible in Rust. Yes, you can write a macro for it or use the existing one, but now you get all the disadvantages of macros. For instance, you cannot

It's not possible in Rust. Yes, you can write a macro for it or use the existing one, but now you get all the disadvantages of macros. For instance, you cannot (to my knowledge) manipulate a macro with another macro. You can't use a macro and feed it with the format macro to get another macro. With types you can do that (obviously).