No Null in Rust

from Introduction to Rust In Rust, there is no Null.

• If a function doesn’t return anything, instead of null, it returns an empty tuple, also known as “unit.”
  • Unit is
• Is the functionality of Rust’s Option enum similar to optional in languages like Swift?
• A clean way to unwrap an optional is like this:

match i32_bag.item {
    Some(v) => println!("found {} in bag!", v),
    None => println!("found nothing"),
}

- It resembles optional binding.

• Is there something like Swift’s ”!” in Rust?
  • Yes, there is .unwrap.
    • However, it is naturally discouraged.
    • If it fails, instead of an error, it causes a panic.