| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // run-pass |
| trait Equal { |
| fn equal(&self, other: &Self) -> bool; |
| fn equals<T,U>(&self, this: &T, that: &T, x: &U, y: &U) -> bool |
| where T: Eq, U: Eq; |
| } |
| |
| impl<T> Equal for T where T: Eq { |
| fn equal(&self, other: &T) -> bool { |
| self == other |
| } |
| fn equals<U,X>(&self, this: &U, other: &U, x: &X, y: &X) -> bool |
| where U: Eq, X: Eq { |
| this == other && x == y |
| } |
| } |
| |
| fn equal<T>(x: &T, y: &T) -> bool where T: Eq { |
| x == y |
| } |
| |
| fn main() { |
| println!("{}", equal(&1, &2)); |
| println!("{}", equal(&1, &1)); |
| println!("{}", "hello".equal(&"hello")); |
| println!("{}", "hello".equals::<isize,&str>(&1, &1, &"foo", &"bar")); |
| } |