1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![allow(unknown_features)]
12 #![feature(box_syntax)]
19 fn bark(&self) -> String;
23 fn bark(&self) -> String {
24 return format!("woof! (I'm {})", self.name);
30 let snoopy = box Dog{name: "snoopy".to_string()};
31 let bubbles = box Dog{name: "bubbles".to_string()};
32 let barker = [snoopy as Box<Barks>, bubbles as Box<Barks>];
35 println!("{}", pup.bark());