1 // Copyright 2012 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.
13 struct shrinky_pointer
<'a
> {
17 impl<'a
> Drop
for shrinky_pointer
<'a
> {
19 println
!("Hello!"); self.i
.set(self.i
.get() - 1);
23 impl<'a
> shrinky_pointer
<'a
> {
24 pub fn look_at(&self) -> isize { return self.i.get(); }
27 fn shrinky_pointer(i
: &Cell
<isize>) -> shrinky_pointer
{
34 let my_total
= &Cell
::new(10);
35 { let pt = shrinky_pointer(my_total); assert!((pt.look_at() == 10)); }
36 println
!("my_total = {}", my_total
.get());
37 assert_eq
!(my_total
.get(), 9);