Example of true reactive programming in Dart

test('Generate Reactive Fibonacci', () {
    final fibonacci = new BindableList([1, 1]);
    for (var i = 0; i < 10; i++) fibonacci.add(fibonacci[i] + fibonacci[i + 1]);
    expect(fibonacci.value, equals([1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144]));

    fibonacci[0] = 2;
    fibonacci[1] = 2;
    expect(fibonacci.value, equals([2, 2, 4, 6, 10, 16, 26, 42, 68, 110, 178, 288]));
});