Re: Benefits of Sub-procedures

[rob@xxxxxxxxx]

GA,

1)  The type checking
2)  PLISTs aren't nearly as flexible.  The PLIST in one program will 
probably not match the PLIST in another program even if they are both 
calling the same program.  The programmers style, or the business problem 
at hand, may use different variable names in the program.  However a /copy 
of the prototype doesn't care what the variable names are in the program.

The only problem I have with EXTPGM's is that I so much want to change 
them into one big subprocedure in a Module of a Service Program.  (Not 
that this is a bad thing.)  I just like the return variables you can get 
with a subprocedure
MyVar = MyPgm(Parm1:Parm2);
while a straight EXTPGM requires
MyPgm(Parm1:Parm2:MyVar);
Granted, the prototypes and procedure interfaces are documenting but the 
inline code is my preference.


Rob Berendt
-- 
"They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety." 
Benjamin Franklin 




G Armour <garmour400r@xxxxxxxxx> 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
10/24/2003 10:20 AM
Please respond to
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>


To
RPG programming on the AS400 / iSeries <rpg400-l@xxxxxxxxxxxx>
cc

Subject
Re: Benefits of Sub-procedures






--- Barbara Morris <bmorris@xxxxxxxxxx> wrote:
> Andy Holmer wrote:
> > Barbara,
> > 
> > Please correct me if I misunderstand this...
> > >
> > I can always prototype the program call incorrectly.  The compiler 
will
> > ensure that I call the way that I have prototyped, but not necessarily
> > the way the *Entry PLIST was defined.  I do not get that kind of
> > checking unless I use Sub-Procedures and a /COPY book to check the
> > prototype against the interface as I compile the module.
> 
> Andy, you can write your program to /copy in the prototype and use a
> procedure interface instead of the *ENTRY PLIST.  Then you get the same
> parameter checking as with procedures.

<After blank gaze passes>
This love affair with /copy baffles me.  But if this is an advantage for 
prototypes,
why not just /COPY the parameters for the *ENTRY & CALL PLISTs?  If you do 
that,
what advantage do prototypes have over *ENTRY?

Not picking a fight, just really curious.  Honest.

GA


__________________________________
Do you Yahoo!?
The New Yahoo! Shopping - with improved product search
http://shopping.yahoo.com
_______________________________________________
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.