Code shared from the Rust Playground

playground.rs

fn main() {
    let names = vec!["Bob", "Frank", "Ferris"];

    for name in names.iter() {
        match name {
            &"Ferris" => println!("There is a rustacean among us!"),
            _ => println!("Hello {}", name),
        }
    }
    let mut names2 = vec!["Bob", "Frank", "Ferris"];

    for name in names2.iter_mut() {
        match name {
           &mut "Ferris" => println!("There is a rustacean among us!"),
            _ => println!("Hello {}", name),
        }
    }
}