panic! 和assert！

• panic!
• assert!(): if the part inside () is not true, the program will panic.
• assert_eq!(): the two items inside () must be equal.
• assert_ne!(): the two items inside () must not be equal. (ne means not equal)

fn main() {
    let my_name = "Loki Laufeyson";


    assert!(
        my_name == "Loki Laufeyson",
        "{} should be Loki Laufeyson",
        my_name
    );
    assert_eq!(
        my_name, "Loki Laufeyson",
        "{} and Loki Laufeyson should be equal",
        my_name
    );
    assert_ne!(
        my_name, "Mithridates",
        "You entered {}. Input must not equal Mithridates",
        my_name
    );
}