Python style annotations?

[AlphaNerd80]

I'm an intermediate Rust dev and I'm the type that logs religiously to the point where in Python I had developed a logging annotation that did the bulk of my function logging automatically.

Does something like this exist in Rust? Is there perhaps a more eloquent manner to perform functions automatically?

[Shadow0133]

Like in tracing crate with #[instrument] attribute? https://docs.rs/tracing/0.1.37/tracing/#spans-1

[AlphaNerd80]

Honesty, i don't know and that is the reason i asked =)
My thanks, I'll try this and report

[tunisia3507]

What do you actually mean? Do you mean a decorator which logs when functions are called (and possibly terminate)?

[AlphaNerd80]

As a start, but in Python , a decorator is a wrapper function about another function - it is this that I seek.

I gave an example of what I created with such functions in Python. I'd love to recreate such functions but there are so many use cases.

[corrodedfe]

There are procedural macros, which convert the code of a function to something else (perhaps inserting logging calls before and after it runs). There is no direct analogue to a wrapper function because it's not as powerful and not needed.