RE: Dynamic 'callp'

Yes Jon. Where is the 2nd Edition?

Bruce "Hoss" Collins
IT Architect
AAA Cooper Transportation
(334) 836-8434

"Leadership is solving problems. The day soldiers stop bringing you
their problems is the day you have stopped leading them.
They have either lost confidence that you can help or concluded you do
not care. Either case is a failure of leadership." Colin Powell

"Just because no one complains does not mean everything is going well.
They may have just given up hope of getting it fixed."
Bruce Collins

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx

[mailto:rpg400-l-bounces@xxxxxxxxxxxx]

On Behalf Of DeLong, Eric
Sent: Tuesday, August 07, 2007 9:47 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Dynamic 'callp'

Speaking of "the redbook", what ever happened to the sequel.... uh...
refresh of that title?

Just wondering..
Eric

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Jon Paris
Sent: Tuesday, August 07, 2007 9:00 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Re: Dynamic 'callp'


On Tue, 07 Aug 2 Brian Parkin said: "However, dynamic calls using a
variable
for the program name have a performance overhead. Hence most dynamic
calls
employ a constant/literal for the name."

These days the overhead is very small Brian - it only becomes really
significant if the target is changed on every call. The compilers

(RPG400

and
RPG IV) only resolve the pointer now when the content of the variable
changes.

And for anyone wondering if you can use this variable target approach

with

subprocedures the answer is yes - and there is a very simple example

in

the
RPG Redbook "Who Knew You Could Do That ..."


Jon Paris
Partner400
www.Partner400.com


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