src/test/run-pass/rfc1592-deprecated.rs

   1 // Copyright 2016 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 use std::fmt;
  12
  13 trait Foo {
  14     fn foo(&self) -> (Self, Self);
  15 }
  16
  17 impl<T: Copy> Foo for T {
  18     fn foo(&self) -> (Self, Self) {
  19         (*self, *self)
  20     }
  21 }
  22
  23 fn main() {
  24     assert_eq!((11).foo(), (11, 11));
  25
  26     let junk: Box<fmt::Debug+Sized> = Box::new(42);
  27     let f = format!("{:?}", junk);
  28     assert_eq!(f, "42");
  29 }