Przemysław Czerpak wrote: > On Mon, 22 Mar 2010, Szak�ts Viktor wrote:
> For tables which have very big number of fields the speed > improvement should be huge. Accessing fields by name is > relatively very slow operation and all RDD methods which > transfer records between workareas use such translation > table with indexes to eliminate it. > Przemyslaw, sorry if my question is a dumb one, but could the HVM+RDDs use such translation table for the normal code? I have, I think we all have, plenty of code doing alias->name := or var := alias->name in loops as well, so If this could be made faster at runtime, when the position of fields cannot change between every dbUseArea()/dbCloseArea() pair, this could be a speed boost which gives some noticeable result. Maybe this cannot be done, but maybe every alias->field could be compiled into a lookup table indexed expression and the lookup table be compiled by dbUseArea(). What do you think? Maurilio. -- __________ | | | |__| Maurilio Longo |_|_|_|____| farmaconsult s.r.l. _______________________________________________ Harbour mailing list (attachment size limit: 40KB) Harbour@harbour-project.org http://lists.harbour-project.org/mailman/listinfo/harbour
