RE: Allocate field with options(*nopass :*omit)

In that case, how about:

       p example         B                   export
       d                 pi            10i 0 opdesc
       d  piParm1                   32767    const
       d options(*varsize:*nopass:*omit)
       d  piParm2                   32767    const
       d options(*varsize:*nopass:*omit)
 
       d  p1Exists                        N
       d  p2Exists                        N
 
 /free
   if %parms() = 2;
       exampleWithDft(piParm1 : piParm2);

   elseif %parms() = 1;
       exampleWithDft(piParm1 : P2_DEFAULT_VALUE);

   elseif %parms() = 0;
       exampleWithDft(P1_DEFAULT_VALUE : P2_DEFAULT_VALUE);

   endif;
/end-free

Then define the procedure "exampleWithDft" to do whatever you would have 
done in "example", but without all the nasty if statements.  This way, 
whoever is using your procedure gets the benefit of a simpler interface, 
and you get the benefit of writing the important logic in a 
straightforward way without worrying about which parameters are defined.



rpg400-l-bounces+aglauser=erbgroup.com@xxxxxxxxxxxx wrote on 30/08/2006 
10:37:17 AM:

This method gets complicated when a procedure has several of those parms
and needs to use them to call another procedure later. 

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
AGlauser@xxxxxxxxxxxx
Sent: Wednesday, August 30, 2006 9:32 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Allocate field with options(*nopass :*omit)

If you are concerned about copying the parameter value, what about:


      p example         B                   export
      d                 pi            10i 0 opdesc
      d  piParm1                   32767    const
 options(*varsize:*nopass:*omit)
      d  piParm2                   32767    const
 options(*varsize:*nopass:*omit)

      d  p1Exists                        N
      d  p2Exists                        N

/free
  if %parms() >= 1;
      p1Exists = *on;
  endif;

  if %parms() = 2;
      p2Exists = *on;
  endif;


 if        p1Exists
     .... Do something
 else
     .... Do something else
 endif

 if        p2Exists
     .... Do something
 else
     .... Do something else
 endif
/end-free

Hope this helps,
Adam

P.S. - Sorry if font is small ... I'm trying to figure out why this
happens.

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