37 lines
922 B
Rust
37 lines
922 B
Rust
// Copyright 2012 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.
|
|
|
|
pub trait Add<RHS,Result> {
|
|
pure fn add(rhs: &RHS) -> Result;
|
|
}
|
|
|
|
trait MyNum : Add<self,self> { }
|
|
|
|
struct MyInt { val: int }
|
|
|
|
impl MyInt : Add<MyInt, MyInt> {
|
|
pure fn add(other: &MyInt) -> MyInt { mi(self.val + other.val) }
|
|
}
|
|
|
|
impl MyInt : MyNum;
|
|
|
|
fn f<T:MyNum>(x: T, y: T) -> T {
|
|
return x.add(&y);
|
|
}
|
|
|
|
pure fn mi(v: int) -> MyInt { MyInt { val: v } }
|
|
|
|
fn main() {
|
|
let (x, y) = (mi(3), mi(5));
|
|
let z = f(x, y);
|
|
assert z.val == 8
|
|
}
|
|
|