RE: How would you code an infinite RPG loop - Was 1 <> 1 is true???

Hi Rick

Does that work?  The loop will never be executed because 1 will never be
equal to -1 and a DOW tests the condition at the start of the loop.  DOU, on
the other hand would execute the loop until told to leave.

Personally I tend to use either of the following depending on how my mood
takes me:

     D True            s               n   Inz(*On) 
     D False           s               n   Inz(*Off)
                                                    
     C                   DoW       True             
     C                   If        Condition = Met  
     C                   Leave                      
     C                   EndIf                      
     C                   EndDo                      
                                                    
     C                   DoU       True = False     
     C                   If        Condition = Met  
     C                   Leave                      
     C                   EndIf                      
     C                   EndDo                      

IN some ways I think the second example is better because it makes you look
twice at the line and take note that it's a DOU and not a DOW.

Jonathan


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Rick.Chevalier@xxxxxxxxxxxxxxx
Sent: 10 January 2007 16:45
To: rpg400-l@xxxxxxxxxxxx
Subject: How would you code an infinite RPG loop - Was 1 <> 1 is true???


 I'm curious.  I use a loop similar to the one below to place the
program into a wait state until a condition is met.  In this case,
entries have been remove from a data queue so it's save to add another
one.  It prevents the program from overflowing the data queue.  It is
prefaced with several lines of comments explaining why the loop is
there.

        DoW 1 = -1
                If data queue is not full
                        leave
                EndIf
        EndDo

If this isn't the way one should do this kind of thing, how should it be
done?

Rick

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Ron Power
Sent: Wednesday, January 10, 2007 9:29 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: 1 <> 1 is true???

Ok...  let me explain.
I'm running a test on emailing pdf's.  That section of code
deletes the spool file after it's sent.  I don't want the
spool file deleted because for now I want to manually do
stuff to it.  Once I'm done, I'm removing the if statement. 
I don't want to comment out the section of code cause I don't
want the date to change on the code line because it's not
really changed.  I would never ever stick a line of code in
like that if it was going to production.

:)

Ron Power
Programmer
Information Services
City Of St. John's, NL
P.O. Box 908
St. John's, NL
A1C 5M2
709-576-8132
rpower@xxxxxxxxxx
http://www.stjohns.ca/
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