What is the difference between loop and while true?

Question

The Rust tutorial, and now book claim there is a difference between while true and loop, but that it isn\'t super important to understand at this stage

Answer 1

One major difference is that loop can return a value by passing a value to break. while and for will not:

fn main() {
    let mut counter = 0;

    let result = loop {
        counter += 1;

        if counter == 10 {
            break counter * 2;
        }
    };

    assert_eq!(result, 20);
}