public void CouldUseVecSlice()
{
var arr = new[] { 1, 2, 3 };
var vecT = new Vec <int>(arr).Slice(1);
var vec = new Vec(arr).Slice(1);
Assert.AreEqual(2, vecT.Length);
Assert.AreEqual(2, vec.Length);
Assert.AreEqual(2, vecT[0]);
Assert.AreEqual(3, vecT[1]);
Assert.AreEqual(2, vec[0]);
Assert.AreEqual(3, vec[1]);
Assert.IsTrue(vec.As <int>().ReferenceEquals(vecT));
Assert.IsTrue(vecT.Span.SequenceEqual(vec.AsSpan <int>()));
}