[RUST/COMMON] AddAssign 트레잇 : 제네릭 메소드 만들기

■ AddAssign 트레잇을 사용해 구조체의 제네릭 메소드를 만드는 방법을 보여준다.

▶ 예제 코드 (RS)


#[derive(Debug)]
struct Point<T>
{
    x : T,
    y : T
}

impl<T> Point<T> where T : std::ops::AddAssign
{
    fn new(x : T, y : T) -> Self
    {
        return Self { x, y };
    }

    fn add(&mut self, source : Point<T>)
    {
        self.x += source.x;
        self.y += source.y;
    }
}
fn main()
{
    let mut point : Point<i32> = Point::new(10, 10);

    println!("{:?}", point);

    point.add(Point{ x : 20, y : 30 });

    println!("{:?}", point);
}

#[derive(Debug)]

struct Point<T>

{

x : T,

y : T

}

impl<T> Point<T> where T : std::ops::AddAssign

{

fn new(x : T, y : T) -> Self

{

return Self { x, y };

}

fn add(&mut self, source : Point<T>)

{

self.x += source.x;

self.y += source.y;

}

fn main()

{

let mut point : Point<i32> = Point::new(10, 10);

println!("{:?}", point);

point.add(Point{ x : 20, y : 30 });

println!("{:?}", point);

}