trait_overload2.rs

trait Position<T> {
    fn pos(&self) -> T;
}

struct Location {
    lat: f32,
    lon: f32,
}

impl Position<String> for Location {
    fn pos(&self) -> String {
        format!("{},{}", self.lat, self.lon)
    }
}

#[derive(Debug)]
struct Point {
    x: f32,
    y: f32,
}

impl Position<Point> for Location {
    fn pos(&self) -> Point {
        Point {
            x: self.lat,
            y: self.lon,
        }
    }
}

fn main() {
    let l = Location {
        lat: 37.05655,
        lon: -121.88823,
    };

    let s: String = l.pos();
    let p: Point = l.pos();
    println!("As string: {}", s);
    println!("As point: {:?}", p);
}