Top C++ Sequence Methods

The following C++ Sequence methods take an integer argument n and produce result sequences of the top n elements as described in the table below:

Sequence<T> topMax(mco_size_t n) const	Return the top n maximum values in the object's sequence
Sequence<T> topMin(mco_size_t n) const;	Return the top n minimum values in the object's sequence
Sequence<mco_seq_no_t> topPosMax(mco_size_t n) const	Return the positions of the top n maximum values in the object's sequence
Sequence<mco_seq_no_t> topPosMin(mco_size_t n) const	Return the positions of the top n minimum values in the object's sequence

Example

Following is an example code snippet demonstrating one of these functions:

     
    {
        mco_trans_h trans;
        mco_cursor_t quote_cursor;
        Quote quote;
        float close;
        MCO_RET rc;
        ...
        rc = mco_trans_start(db, MCO_READ_ONLY, MCO_TRANS_FOREGROUND, &trans);
        if ( MCO_S_OK == rc )
        {
         
            for (rc = mco_cursor_first(trans, &quote_cursor); 
                rc != MCO_S_CURSOR_END; 
                rc = mco_cursor_next(trans, &quote_cursor)) 
            {
                quote.from.cursor(trans, &quote_cursor);
                Sequence<float> top10Close = quote.close_iterator().topMax(10);
                 
                while (top10Close.next(close)) 
                {
                    Char<MAX_SYMBOL_LEN> symbol = quote.symbol;
                    printf("%s: close=%.3f\n", (char*)symbol, close);
                }
            }
            mco_trans_rollback(trans);
        }
    }