src/test/run-pass/trait-with-bounds-default.rs

   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.
   4 //
   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.
  10 //
  11
  12 pub trait Clone2 {
  13     /// Returns a copy of the value. The contents of boxes
  14     /// are copied to maintain uniqueness, while the contents of
  15     /// managed pointers are not copied.
  16     fn clone(&self) -> Self;
  17 }
  18
  19 trait Getter<T: Clone> {
  20     fn do_get(&self) -> T;
  21
  22     fn do_get2(&self) -> (T, T) {
  23         let x = self.do_get();
  24         (x.clone(), x.clone())
  25     }
  26
  27 }
  28
  29 impl Getter<isize> for isize {
  30     fn do_get(&self) -> isize { *self }
  31 }
  32
  33 impl<T: Clone> Getter<T> for Option<T> {
  34     fn do_get(&self) -> T { self.as_ref().unwrap().clone() }
  35 }
  36
  37
  38 pub fn main() {
  39     assert_eq!(3.do_get2(), (3, 3));
  40     assert_eq!(Some("hi".to_string()).do_get2(), ("hi".to_string(), "hi".to_string()));
  41 }