fn main() {
    let deep_wrapped: Option<Option<Option<String>>> = Some(Some(Some("hello".to_string())));

    // let unwrapped1 = deep_wrapped.expect("None in depth 1!");
    // let unwrapped2 = unwrapped1.expect("None in depth 2!");
    // let unwrapped3 = unwrapped2.expect("None in depth 3!");

    // println!("{}", unwrapped3);

    if let Some(unwrapped1) = deep_wrapped {
        if let Some(unwrapped2) = unwrapped1 {
            if let Some(unwrapped3) = unwrapped2 {
                println!("{}", unwrapped3);
            }
        }
    }
}