src/test/run-pass/traits-default-method-trivial.rs

   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.
   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
  13 trait Cat {
  14     fn meow(&self) -> bool;
  15     fn scratch(&self) -> bool;
  16     fn purr(&self) -> bool { true }
  17 }
  18
  19 impl Cat for isize {
  20     fn meow(&self) -> bool {
  21         self.scratch()
  22     }
  23     fn scratch(&self) -> bool {
  24         self.purr()
  25     }
  26 }
  27
  28 pub fn main() {
  29     assert!(5.meow());
  30 }