final ArrayOfNumber a = arrayFrom(items);
assertSamelitude(items, a.splice(0, items.length));
assertSamelitude(new double[] {}, a);
final ArrayOfNumber b = arrayFrom(items);
assertSamelitude(new double[] {}, b.splice(0, 0));
assertSamelitude(items, b);
final ArrayOfNumber c = arrayFrom(items);
assertSamelitude(new double[] {items[0], items[1]}, c.splice(0, 2));
assertSamelitude(new double[] {items[2], items[3], items[4]}, c);