gistfile1.rb

def tableView(aView, acceptDrop:info, row:droppedRow, dropOperation:op)
    pboard = info.draggingPasteboard
    row_data_array = YAML.load(pboard.stringForType("MyRowDataType")) #grab the YAML from the pasteboard and convert it back to an array
    row_data_array.reverse.each do |row| #You'll want to insert your rows in reverse order to maintain the indexes, thus the reverse call
        #rearrange your table_data_array accordingly here. droppedRow represents index value of where the row was dropped. 
    end
        
    table_view.deselectAll(nil) #Deselect everything after the drop
    table_view.reloadData #redraw the table to show the updates
        
    return true #if everything went as planned, return true
end