I didn't mean to overstate the performance debate. There are two concerns, complexity and performance. We are ok with the complexity, I just couldn't come up with a good argument either way on the performance not having any experience with it yet.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Kurt Anderson
Sent: Friday, May 08, 2009 1:39 PM
To: 'RPG programming on the IBM i / System i'
Subject: RE: Call back procedures

It seems to me that your idea for using the call back procedure is beneficial. It's smart and thought out. Where's the performance hit? Because you may have 10 warnings and the new way would call the error routine 10 times and the old way would only call the error routine once? What if you have 1 error and 100 warnings, and the error occurred first, boom you're out of your edit without encountering the 100 warnings.

I don't know how can quantify that, one way or the other. Even so, like others have said, it's just like any other procedure call. Personally, I'd side with reason vs performance on this one... not to say there really is any performance hit. Are the people concerned with performance take that into account when they program a subR or procedure call?

On a sidenote, I'm glad to see someone's using (or wants to use) call back procedures. I have an idea for one to put into my shop... but one change at a time. :)

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