RE: Calling an RPG procedure with optional parameters from C code

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx 
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Osborn, Stephen
Sent: Wednesday, November 01, 2006 12:57 PM
To: RPG programming on the AS400 / iSeries
Subject: RE: Calling an RPG procedure with optional 
parameters from C code

*OMIT doesn't make a parameter "optional".

*OMIT means you can pass the special value of *OMIT.

*NOPASS == optional.  You can chose to pass something or not 
pass anything.

I think you are splitting hairs here, especially as in my 
original post I
said I was using *OMIT

Perhaps, but I'm doing it for very good reason.

*OMIT and *NOPASS are two very different things, used for very different
reasons, that work in very different ways.

Unfortunately, many are not clear on the differences.  By using improper
terminology, we confuse the issue even more.

The point is *OMIT and *NOPASS are not two different ways to make a
parameter optional.  *NOPASS means the procedure considers the parameter
optional, *OMIT means that the procedure considers a NULL pointer valid
for that parameter.

I often code parameters as options(*NOPASS:*OMIT).

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121