KotlinExt.kt

fun <T : List<DiffItem>, R : RecyclerView.ViewHolder> autoNotifyDelegate(adapter: RecyclerView.Adapter<R>, initialValue: T): ReadWriteProperty<Any?, T> =
    object : ObservableProperty<T>(initialValue) {
        override fun afterChange(property: KProperty<*>, oldValue: T, newValue: T) {
            adapter.autoNotify(oldValue, newValue)
        }
    }