Rust code shared from the playground

playground.rs

#[macro_use]
extern crate serde_derive;

extern crate serde;
extern crate serde_json;

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

#[derive(Serialize, Deserialize, Debug)]
struct TwoPoints {
    fst: Point,
    snd: Point,
}

fn main() {
    let point = TwoPoints {
        fst: Point { x: 1, y: 2 },
        snd: Point { x: 2, y: 1 },
    };

    // Convert the Point to a JSON string.
    let serialized = serde_json::to_string(&point).unwrap();

    // Prints serialized = {"x":1,"y":2}
    println!("serialized = {}", serialized);

    // Convert the JSON string back to a Point.
    let deserialized: TwoPoints = serde_json::from_str(&serialized).unwrap();

    // Prints deserialized = Point { x: 1, y: 2 }
    println!("deserialized = {:?}", deserialized);
}