What is the equivalent of 'pass' from Python, in Rust?

I want to check if the result from a request is having any issue. I categorize it into two: i) server error, ii) something else that is not a success. The third category is, result actually being a success. However, in the third category, I don’t want to do anything.

So, my desirable code is:

if res.status().is_server_error() {
        panic!("server error!");
    } else if !(res.status.is_success()){
        panic!("Something else happened. Status: {:?}", res.status());
    } else{
        pass;
    }

I am aware of other ways to achieve this result: using match, ifs instead of if else if. But I wanted to learn what is the corresponding keyword of pass, like we have in Python. My aim is: if result is successful, just move along, if not, there are two ways to handle that panic.

>Solution :

Behold!

if predicate {
    do_things();
} else {
    // pass
}

Or even better

if predicate {
    do_things();
} // pass

Or as I’ve recently taken to calling it the implicit + pass system

if predicate {
    do_things();
}

In all seriousness there is no pass and no need for a pass in rust. As for why it exists in python, check out this answer