Function iter

cranelift/entity/src/boxed_slice.rs:178–204

()

    #[test]
    fn iter() {
        let mut p: PrimaryMap<E, usize> = PrimaryMap::new();
        p.push(12);
        p.push(33);
        let mut m = p.into_boxed_slice();

        let mut i = 0;
        for (key, value) in &m {
            assert_eq!(key.index(), i);
            match i {
                0 => assert_eq!(*value, 12),
                1 => assert_eq!(*value, 33),
                _ => panic!(),
            }
            i += 1;
        }
        i = 0;
        for (key_mut, value_mut) in m.iter_mut() {
            assert_eq!(key_mut.index(), i);
            match i {
                0 => assert_eq!(*value_mut, 12),
                1 => assert_eq!(*value_mut, 33),
                _ => panic!(),
            }
            i += 1;
        }
    }

    #[test]
    fn iter_rev() {