comprehensive_rust/src/main.rs

fn main() {
    println!("coin toss: {}", pick_one("heads", "tails"));
    println!("cash prize: {}", pick_one(500, 1000));
    println!("cash prize: {}", pick_one(5.0, 1000));
}

fn pick_one<T>(a: T, b: T) -> T {
    if std::process::id() % 2 == 0 {
        return a
    } else {
        return b
    }
}