1 // Copyright 2013 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 /// Returns a copy of the value. The contents of owned pointers
14 /// are copied to maintain uniqueness, while the contents of
15 /// managed pointers are not copied.
16 fn clone(&self) -> Self;
19 trait Getter
<T
: Clone
> {
20 fn do_get(&self) -> T
;
22 fn do_get2(&self) -> (T
, T
) {
23 let x
= self.do_get();
24 (x
.clone(), x
.clone())
29 impl Getter
<isize> for isize {
30 fn do_get(&self) -> isize { *self }
33 impl<T
: Clone
> Getter
<T
> for Option
<T
> {
34 fn do_get(&self) -> T { self.as_ref().unwrap().clone() }
39 assert_eq
!(3.do_get2(), (3, 3));
40 assert_eq
!(Some("hi".to_string()).do_get2(), ("hi".to_string(), "hi".to_string()));