On 03.04.2007 21:34, ara.t.howard / noaa.gov wrote: > so, now you see what you should - all approaches are within the same > order of magnitude: there is no difference. Well, factor two between slowest and fastest. Not dramatic but may be noticeable when dealing with large quantities of objects. But I also (?) have this "premature optimization" feeling about this thread. And we don't have seen real memory measurements yet which seemed to have been the root concern... Kind regards robert