PRODUCT  :  Borland C++                           NUMBER  :  1709
  VERSION  :  3.X
       OS  :  All
     DATE  :  October 25, 1993                         PAGE  :  1/1

    TITLE  :  Decrement operators for BIDS doubly linked lists




  Pre and post-decrement operators for BIDS doubly-linked lists

  The pre- and post-decrement operators for the doubly-linked
  list class are NOT implemented in standard container class
  library. To implement these operators do the following:

    (a) In DLISTIMP.H search for "operator int()" and change:

            return cur != &(list->tail);

        to

            return (cur != &(list->tail) &&
                    cur != &(list->head));

    (b) In DLISTIMP.H search for "restart" and insert just above
        the restart() method the following:

            T operator --(int)
            {
                BI_DoubleListElement<T> _FAR *temp = cur;
                cur = cur->prev;
                return temp->data;
            }
            T operator --()
            {
                cur = cur->prev;
                return cur->data;
            }


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