| // Copyright 2013 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. |
| |
| #![allow(unknown_features)] |
| #![feature(box_syntax)] |
| |
| struct Dog { |
| name : String |
| } |
| |
| trait Barks { |
| fn bark(&self) -> String; |
| } |
| |
| impl Barks for Dog { |
| fn bark(&self) -> String { |
| return format!("woof! (I'm {})", self.name); |
| } |
| } |
| |
| |
| pub fn main() { |
| let snoopy = box Dog{name: "snoopy".to_string()}; |
| let bubbles = box Dog{name: "bubbles".to_string()}; |
| let barker = [snoopy as Box<Barks>, bubbles as Box<Barks>]; |
| |
| for pup in &barker { |
| println!("{}", pup.bark()); |
| } |
| } |
