> for Optional promotion

You'll see the same in Rust

    fn example(name: Option<String>) -> Option<usize> {
        let name = name?;
        Some(name.len())
    }

Or

    fn example(name: Option<String>) {
        if let Some(name) = name {
            println!("{}", name.len());
        }
    }

A main difference is the requirement to use `Some`, which allows for the flexibility to apply to any enum.

> but since `self.` is implicit

To make sure I'm following, do you mean that Rust's `self.` is implicit in Swift?