hello rust structs and methods / published by https://github.com/dacr/code-examples-manager #0d42efab-2b25-4c42-84a4-6d75be03f195/8bef2f7ce2b09d5907b14e31c0ec8090fc64e8cc

hello-struct-2.rs

#!/usr/bin/env rust-script
// summary : hello rust structs and methods
// keywords : rust, structs, data-class, @testable
// publish : gist
// authors : David Crosson
// license : Apache License Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0.txt)
// id : 0d42efab-2b25-4c42-84a4-6d75be03f195
// created-on : 2024-10-16T09:05:31+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : ./$file

struct Someone {
    name: String,
    age: Option<u8>,
}

impl Someone {
    fn new(name: String) -> Self {
        Self { name, age: None }
    }

    fn greetings(&self) { // comment on prend possession l'instance // ICI en immutable
        match self.age {
            Some(age) => println!("Hello, {} year old named {}!", age, self.name),
            None => println!("Hello, {} with year old unknown!", self.name),
        }
    }
}

fn main() {
    let comp = Someone::new(String::from("Rust 🚀"));
    comp.greetings();
}