/// <summary>
/// Choose some item of this collection.
/// </summary>
/// <exception cref="CollectionModifiedException">if underlying collection has been modified.</exception>
/// <exception cref="NoSuchItemException">if range is empty.</exception>
/// <returns></returns>
public override T Choose()
{
thebase.modifycheck(stamp);
if (count == 0)
{
throw new NoSuchItemException();
}
return(thebase.array[start]);
}
public override bool MoveNext()
{
ArrayBase <T> list = _rangeEnumeratorArrayBase;
list.modifycheck(_theStamp);
if (_index < _count)
{
Current = list.array[_start + _delta * _index];
_index++;
return(true);
}
Current = default(T);
return(false);
}