RE: CAT bug in ILE RPG

[Hans Boldt <boldt@xxxxxxxxxx>]

Joe Teff wrote:
>Thank's for this little insight. Do you have any other tidbits
>like these? I am preparing an RPG/ILE course for other
>consultants that I will be conducting in Jan-Feb. They
>are all RPG/400 programmers. Some have started using
>RPG IV, but none have really gotten into procedures,
>service programs and activation groups much. Most still
>write using the standard RPG/400 Op Codes instead of
>the new RPG IV Op Codes. Any ammunition will help!

I'm not sure I can add anything that hasn't been
said elsewhere.  Best to check back issues of
Midrange and News/400, especially News/400's "Tips
and Techniques" issues.  (I've submitted a few tips
for this years issue in December.)  Also, check the
handouts from COMMON sessions.

Here's a couple more off the top of my head:

1) In OPM RPG III, packed numeric data type offered
   the best performance.  In ILE RPG, integer and
   unsigned are best.

2) Some 3rd party RPG III to RPG IV conversion tools
   will convert fixed-form arithmetic ops to
   expressions.  Since numeric overflow is always
   signalled for expressions, conversion of fixed to
   free-format may reveal bugs in your computations.

3) In general, just use the new ways of doing things!

I'm sure others can offer more tips.

Cheers!  Hans

Hans Boldt, ILE RPG Development, IBM Toronto Lab, boldt@ca.ibm.com
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