Mastering Rust - Second Edition

Impl blocks on structs

We can add behavior to our previously defined Player struct with two functionalities: a constructor-like function that takes a name and sets default values for the remaining fields in Person, and getter and setter methods for the friend count of Person:

// struct_methods.rsstruct Player {    name: String,    iq: u8,    friends: u8}impl Player {    fn with_name(name: &str) -> Player {        Player {            name: name.to_string(),            iq: 100,            friends: 100        }    }    fn get_friends(&self) -> u8 {        self.friends    }    fn set_friends(&mut self, count: u8) {        self.friends = count;    }}fn main() {    let mut player = Player::with_name("Dave");    player.set_friends(23);    println!("{}'s friends count: {}", player.name, player.get_friends()); // another way to call instance ...