24 lines
748 B
Rust
24 lines
748 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.
|
|
|
|
|
|
use std::gc::{Gc, GC};
|
|
|
|
struct Box<T> {c: Gc<T>}
|
|
|
|
fn unbox<T:Clone>(b: Box<T>) -> T { return (*b.c).clone(); }
|
|
|
|
pub fn main() {
|
|
let foo: int = 17;
|
|
let bfoo: Box<int> = Box {c: box(GC) foo};
|
|
println!("see what's in our box");
|
|
assert_eq!(unbox::<int>(bfoo), foo);
|
|
}
|