| #![feature(box_syntax)] |
| |
| struct Clam { |
| x: Box<isize>, |
| y: Box<isize>, |
| } |
| |
| struct Fish { |
| a: Box<isize>, |
| } |
| |
| fn main() { |
| let a: Clam = Clam{x: box 1, y: box 2}; |
| let b: Clam = Clam{x: box 10, y: box 20}; |
| let z: isize = a.x + b.y; |
| //~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>` |
| println!("{}", z); |
| assert_eq!(z, 21); |
| let forty: Fish = Fish{a: box 40}; |
| let two: Fish = Fish{a: box 2}; |
| let answer: isize = forty.a + two.a; |
| //~^ ERROR binary operation `+` cannot be applied to type `std::boxed::Box<isize>` |
| println!("{}", answer); |
| assert_eq!(answer, 42); |
| } |