array.unshift(newItems[0]);
assertEquals(newItems[0], array.get(0));
assertEquals(newItems.length, array.length());
// Now join them together in harmony.
assertEquals("3$4$5", array.join("$"));
final double[] itemsA = new double[] {0.01, 0.02};
final double[] itemsB = new double[] {0.03, 0.04};
final ArrayOfNumber a = arrayFrom(itemsA);
final ArrayOfNumber b = arrayFrom(itemsB);