get_by_second_array
Description:
Gets the by_second array from Recurrence.
The array size if I_CAL_BY_SECOND_SIZE.
Parameters:
| this | The Recurrence | 
Returns:
| The by_second of Recurrence. | 
Gets the by_second array from Recurrence.
The array size if I_CAL_BY_SECOND_SIZE.
| this | The Recurrence | 
| The by_second of Recurrence. |