Re: Interactive logic-style question

The only thing I would add to Nathan’s approach (and I would have said the same thing about your original RPG III version) is that if performance is an issue then always test the initialize last.

Personally I would also have called the init routine before I began the loop and have it set the first action.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Apr 20, 2015, at 8:27 PM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

Bob,

As far as style is concerned, my only objection would be the use of the #
character as a variable prefix. But I understand that each shop has their
own naming conventions, and I don't expect others to have the same as mine.

As far as structure is concerned, it's well formed; much better than a lot
of alternatives.

Regarding performance, we're talking very few microseconds to evaluate a
"when" condition. Contrast that with most web application environments
which "route" browser requests to appropriate "servers", whether they be
Java servlets, or scripts running under interpreted environments, you will
find a comparatively HUGE amount of overhead in the latter.

Your structure for dispatching requests based on #WrkMode could be viewed
as the "controller", following a Model/View/Controller design pattern. Bind
your controller to a *SRVPGM which implements procedures to handle screen
I/O, then bind that *SRVPGM to another *SRVPGM which implements database
I/O. Now you have an application that implements a very maintainable MVC
design pattern.

Nathan.
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