36 lines
890 B
Rust
36 lines
890 B
Rust
|
// 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.
|
||
|
|
|
||
|
|
struct Dog {
|
||
|
|
name : ~str
|
||
|
|
}
|
||
|
|
|
||
|
|
trait Barks {
|
||
|
|
fn bark(&self) -> ~str;
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Barks for Dog {
|
||
|
|
fn bark(&self) -> ~str {
|
||
|
|
return fmt!("woof! (I'm %s)", self.name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
pub fn main() {
|
||
|
|
let snoopy = ~Dog{name: ~"snoopy"};
|
||
|
|
let bubbles = ~Dog{name: ~"bubbles"};
|
||
|
|
let barker = [snoopy as ~Barks, bubbles as ~Barks];
|
||
|
|
|
||
|
|
for pup in barker.iter() {
|
||
|
|
println(fmt!("%s", pup.bark()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|