How do I unwrap an arbitrary number of nested Option types?

Question

I\'m trying to write a trait that will allow me to "unwrap" multiple nested Option>>> to a single Option

Answer 1

If you have many Options and you want to avoid chaining unwraps, you can use match:

let val = Some(Some(Some(5)));
let res = match val {
    Some(Some(Some(v))) => v,
    _ => 0, // panic or default
};