File: unsized-tuple-impls.rs

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// run-pass

#![feature(unsized_tuple_coercion)]

use std::collections::HashSet;

fn main() {
    let x : &(i32, i32, [i32]) = &(0, 1, [2, 3]);
    let y : &(i32, i32, [i32]) = &(0, 1, [2, 3, 4]);
    let mut a = [y, x];
    a.sort();
    assert_eq!(a, [x, y]);

    assert_eq!(&format!("{:?}", a), "[(0, 1, [2, 3]), (0, 1, [2, 3, 4])]");

    let mut h = HashSet::new();
    h.insert(x);
    h.insert(y);
    assert!(h.contains(x));
    assert!(h.contains(y));
}