RE: Multi- Occurrence Data Structure

Barbara wrote:

It's because data structure arrays need qualified names. MODS were > available for RPG III on system 38, maybe even RPG II on system 36. It > might be possible to imagine some awful syntax for data structure arrays > without using qualified names, but I think it would end up pretty much > like the MODS syntax. Trying to imagine a syntax for actual

Agreed, a MODS (i.e. an implied current element instead of an explicit index) is necessary in case of unqualified (i.e. global) subfields. So to have multiple occurrences (elements) of a datastructure with global subfields the MODS syntax is the natural fit.

But global subfields can also be seen as bad practice. There is no reason to use global subfields if you can use qualified subfields. In my every day work i never use global subfields anymore and always define a ds as qualified. In this respect, i understand why it was done that way. But then i don't understand why qualified datastructures where not introduced back then, instead of just the MODS syntax. It still seems like a bad "half way" implementation. But i bet nobody was *asking* for qualified datastructures back then, only to have support for "multiple occurrences" of a ds.

Jacobus> To: rpg400-l@xxxxxxxxxxxx> From: bmorris@xxxxxxxxxx> Subject: Re: Multi- Occurrence Data Structure> Date: Fri, 14 Dec 2007 14:48:05 -0500> > john e wrote:> > ... I never understood why this was not done like this> > when MODS where introduced. ...> > It's because data structure arrays need qualified names. MODS were > available for RPG III on system 38, maybe even RPG II on system 36. It > might be possible to imagine some awful syntax for data structure arrays > without using qualified names, but I think it would end up pretty much > like the MODS syntax. Trying to imagine a syntax for actual > qualified-DS-array subfields in RPG II or III makes me a bit carsick.> > -- > This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list> To post a message email: RPG400-L@xxxxxxxxxxxx> To subscribe, unsubscribe, or change list options,> visit: http://lists.midrange.com/mailman/listinfo/rpg400-l> or email: RPG400-L-request@xxxxxxxxxxxx> Before posting, please take a moment to review the archives> at http://archive.midrange.com/rpg400-l.>
_________________________________________________________________
De mooiste afbeeldingen van Angelina Jolie vind je met Live Search
http://search.live.com/images/results.aspx?q=angelina%20jolie&FORM=MIINTM