42 lines
848 B
Rust
42 lines
848 B
Rust
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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(box_syntax)]
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trait T {
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fn print(&self);
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}
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#[derive(Debug)]
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struct S {
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s: isize,
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}
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impl T for S {
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fn print(&self) {
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println!("{:?}", self);
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}
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}
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fn print_t(t: &T) {
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t.print();
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}
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fn print_s(s: &S) {
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s.print();
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}
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pub fn main() {
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let s: Box<S> = box S { s: 5 };
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print_s(&*s);
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let t: Box<T> = s as Box<T>;
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print_t(&*t);
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}
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