Demo None handling with Option

This is another example to demonstrate an Option that can be either None or Some(value).

fn main() {
    let name = get_name(true);
    say_hi(name);

    let name = get_name(false);
    say_hi(name);
}

fn get_name(good: bool) -> Option<String> {
    if good {
        Some(String::from("Gabor"))
    } else {
        None
    }
}

fn say_hi(name: Option<String>) {
    match name {
        Some(text) => println!("Hello {text}"),
        None => println!("Welcome! My name is Rust."),
    }
}

See original idea on What is Rust and why is it so popular?

• Option
• match
• Some
• None