If Let

• For some use cases, when matching enums, match is awkward

#![allow(unused)]

fn main() {
    // Make `optional` of type `Option<i32>`
    let optional = Some(7);

    match optional {
        Some(i) => {
            println!("This is a really long string and `{:?}`", i);
            // ^ Needed 2 indentations just so we could destructure
            // `i` from the option.
        },
        _ => {},
        // ^ Required because `match` is exhaustive. Doesn't it seem
        // like wasted space?
    };
}