Re: Using CALLB with a Service Program

Dan,

Missed this part.  I used this technique once and decided it was not 
the way to go.  In this case I wanted to pass parameters who's type 
was unknown to the compiler.  Operational descriptors are also not 
fully supported in RPG.  Operational descriptors describe parameters 
being passed.  I created a routine to create a pseudo-operational 
descriptor so that I could check in the receiving program to see if 
what was received matched what was expected.  I decided it wasn't 
worth the extra work and that I would have to live with the possibility of 
type mismatches in this case.

To correct this the compiler people could add a new option(*vartype), 
and full support for operational descriptors.  This would be very  
powerful.  To accomplish this, the compiler people need some 
operating system people to change something.  From what I understand, 
they feel this change is not very likely to take place.  Were they to do 
this you could create built in functions (%bifs) with the same capabilities 
as IBM's.

David Morris

>>> "Dan Bale" <dbale@genfast.com> 06/04/99 11:20AM >>>


David,

...And why useCALLB to set up parameters used with CALLP or EVAL?  

+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---