* Casts a sequence of values of a certain type to an array of values of another type, discarding elements that are not cast successfully.

   */

  private static <TSource, TDest> void castRemove(final TSource[] values, final ReifiedList<TDest> list)

  {

    for (TSource v : values)

    {

      TDest castVal;

      try

      {

      }

      catch(ClassCastException e)

      {

        // remove upon any failure

        continue;

   * @throws NullPointerException An argument is null.

   */

  private static <TSource, TDest> void castUseDefault(final TSource[] values, final ReifiedList<TDest> list)

  {

    for (int i = 0; i < count; i++)

    {

      TDest castVal;

      try

      {

   * Returns true if a non-null item is contained in the sequence of values

   */

  private static <T> boolean containsNonNull(final T[] values, final T item)

  {

    for (int i = 0; i < count; i++)

    {

      T v = values[i];

      // if a value is null, we cannot use equals

      if (v != null)

   * Returns true if a non-null item is contained in the sequence of values

   */

  private static <T> boolean containsNonNull(final T[] values, final T item, final Comparator<? super T> comparer)

  {

    for (int i = 0; i < count; i++)

    {

      T v = values[i];

      // if a value is null, we cannot use equals

      if (v != null)

   * Returns true if null is contained in the sequence of values

   */

  private static <T> boolean containsNull(final T[] values)

  {

    for (int i = 0; i < count; i++)

      if (values[i] == null)

        return true;

    return false;

    // check if value contained in sequence

    int result = 0;

    // the values is confirmed to be a non-null IEnumerable prior to this

    for (int i = 0; i < count; i++)

      if (values[i] == null)

        result++;

    return result;

    // check if value contained collection

    int result = 0;

    // the values is confirmed to be a non-null IEnumerable prior to this

    for (int i = 0; i < count; i++)

    {

      T v = values[i];

      if (v != null)

        if (v.equals(value))

    // check if value contained collection

    int result = 0;

    // the values is confirmed to be a non-null IEnumerable prior to this

    for (int i = 0; i < count; i++)

    {

      T v = values[i];

      if (v != null)

        if (comparer.compare(v, value) == 0)

   * Returns the index where the specified not-null element is first found. If the element is not found, this returns -1.

   */

  private static <T> int indexOfNotNull(final T[] values, final T element)

  {

    for (int i = 0; i < count; i++)

    {

      if (element.equals(values[i]))

        return i;

    }

   * Returns the index where the specified not-null element is first found. If the element is not found, this returns -1.

   */

  private static <T> int indexOfNotNull(final T[] values, final T element, final Comparator<? super T> comparer)

  {

    for (int i = 0; i < count; i++)

    {

      if (comparer.compare(element, values[i]) == 0)

        return i;

    }