src/test/run-pass/where-clauses/auxiliary/where_clauses_xc.rs

   1 // Copyright 2014 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 pub trait Equal {
  12     fn equal(&self, other: &Self) -> bool;
  13     fn equals<T,U>(&self, this: &T, that: &T, x: &U, y: &U) -> bool
  14             where T: Eq, U: Eq;
  15 }
  16
  17 impl<T> Equal for T where T: Eq {
  18     fn equal(&self, other: &T) -> bool {
  19         self == other
  20     }
  21     fn equals<U,X>(&self, this: &U, other: &U, x: &X, y: &X) -> bool
  22             where U: Eq, X: Eq {
  23         this == other && x == y
  24     }
  25 }
  26
  27 pub fn equal<T>(x: &T, y: &T) -> bool where T: Eq {
  28     x == y
  29 }