2 use std::cmp::Ordering::{Less,Equal,Greater};
4 #[derive(PartialEq, Eq, PartialOrd, Ord)]
9 let (a, b) = (A { x: &1 }, A { x: &2 });
11 assert_eq!(a.cmp(&a), Equal);
12 assert_eq!(b.cmp(&b), Equal);
14 assert_eq!(a.cmp(&b), Less);
15 assert_eq!(b.cmp(&a), Greater);