#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(cmp_minmax)]
use std::cmp::{self, Ordering};
#[derive(Eq)]
struct Equal(&'static str);
impl PartialEq for Equal {
    fn eq(&self, other: &Self) -> bool {
        true
    }
}
impl PartialOrd for Equal {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        Some(Ordering::Equal)
    }
}
impl Ord for Equal {
    fn cmp(&self, other: &Self) -> Ordering {
        Ordering::Equal
    }
}
fn main() {
    assert_eq!(cmp::minmax(Equal("v1"), Equal("v2")).map(| v | v.0), ["v1", "v2"]);
}