#![allow(unused)]
fn main() {
    use std::ops::Add;

    #[derive(Debug, PartialEq)]
    struct Point {
        x: i32,
        y: i32,
    }

    impl<'a> Add for &'a Point {
        type Output = Point;

        fn add<'b>(self, other: &'b Point) -> Point {
            Point {
                x: self.x + other.x,
                y: self.y + other.y,
            }
        }
    }

    let p1 = Point{ x: 0, y: 1 };
    let p2 = Point{ x: 2, y: 3 };

    let p3 = &p1 + &p2;

    println!("{:?}, {:?}, {:?}", p1, p2, p3);
}