George Gallen wrote: > ok...I found this code snipit (REALITY FLAVOR) > > SELECT FILENAME > LOOP > READNEXT ID ELSE EXIT > WHILE ID DO > CODE > CODE with GOSUB > CODE > CODE > REPEAT > > > What was happening was the loop was exiting early, but it was exiting after > the > CODE with GOSUB line was executed. > > What struck me was why there was a While DO as well as an EXIT in the loop? > while nothing in the CODE or GOSUBs modified the ID, would having both the > WHILE/DO and EXIT cause some kind of problem? > > After I removed (commented out) the WHILE/DO line, the program ran as > expected > and processed the 100,000 records, (whereas before it stopped after 6).
While the code itself is less than elegant, I strongly suspect that the exiting lies in what's being done in the GOSUB. Perhaps it's doing a SELECT or a CLEARSELECT, or something else that corrupts the active select list. I recently saw a piece of code where the active select list was trashed because the code opened a file, then executed a create-file on the opened file... Took us a while to figure that one out. As for the loop structure, I tend to like this: SELECT FILENAME LOOP WHILE READNEXT ID CODE CODE CODE with GOSUB CODE CODE REPEAT It's clean, it's concise, it's easy to read... And I wish I could remember who taught me that you could combine the LOOP and READNEXT in that manner... -- Allen Egerton aegerton at pobox dot com PGP Key ID 0x8EA57261 ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/
