let a = [1, 2, 3, 4, 5, {"a": 1, "b": 2, "c": 3}];
[
    a[2:], a[:3], a[3:5], a[...[1, 3]].[0, 1],
    ~r a[-2], a[1], a[:-2], a[-2:], a[-1]["a", "b"]
]