Equivalent of __func__ or __FUNCTION__ in Rust?

Question

In C and C++ you can get the name of the currently executing function through the __func__ macro with C99 & C++11 and ___FUNCTION___ for MSVC.

Answer 1

Adding to Veedrac's answer, you can get the function's name without its full path by adding this:

macro_rules! function {
    () => {{
        fn f() {}
        fn type_name_of(_: T) -> &'static str {
            std::any::type_name::()
        }
        let name = type_name_of(f);

        // Find and cut the rest of the path
        match &name[..name.len() - 3].rfind(':') {
            Some(pos) => &name[pos + 1..name.len() - 3],
            None => &name[..name.len() - 3],
        }
    }};
}

You will get my_func instead of my::path::my_func for example.