1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Test that we can overload the `+` operator for points so that two
// points can be added, and a point can be added to an integer.
use std::ops;
#[derive(Show,PartialEq,Eq)]
struct Point {
x: int,
y: int
}
impl ops::Add<Point,Point> for Point {
fn add(self, other: Point) -> Point {
Point {x: self.x + other.x, y: self.y + other.y}
}
}
impl ops::Add<int,Point> for Point {
fn add(self, other: int) -> Point {
Point {x: self.x + other,
y: self.y + other}
}
}
pub fn main() {
let mut p = Point {x: 10, y: 20};
p = p + Point {x: 101, y: 102};
assert_eq!(p, Point {x: 111, y: 122});
p = p + 1;
assert_eq!(p, Point {x: 112, y: 123});
}
|
