الوحدات والحزم (Crates)

mod math {
    pub fn add(a: i32, b: i32) -> i32 {
        a + b
    }
}

fn main() {
    println!("{}", math::add(2, 3));
}

use math::add;
add(2, 3);

[dependencies]
rand = "0.8"

use rand::Rng;
let n = rand::thread_rng().gen_range(1..=6);

mod utils;          // يحمّل utils.rs
use utils::helper;