Re: RPG IV program - comments requested

["Scott Klement" <infosys@xxxxxxxxxxxx>]

Jim Langston <jlangston@conexfreight.com> wrote:
>
> The Prototype is only needed for the compiler, if you had many
>  callable subroutines in your source code, you would put all the
>  Prototypes at the top, but but each program interface by each
>  subroutine?  Wait, that doesn't make since, since all D specs have
>  to be declared at the opt of code anyway!
>

Actually, you have seperate D-specs for every procedure.

The procedure interface should always be declared (IMHO) in the first
D-specs of your procedure definition.

Furthermore, if your procedure depends on another procedure thats not
in the same module, the prototype for THAT procedure should be
/COPY-ed into the D-specs for the procedure that needs it.  The
variables that are needed within a procedure should also be defined
as local to that procedure...

This way, you can easily copy that procedure, make small changes, and
have a working routine...   The code is reusable!   Global definitions
ruin this.  Plus, the fewer inputs and outputs to the procedure make
it easier to debug and maintain... (again, thats IMHO)

Very powerful concepts, here, but they take a little bit of working
with to get used to :)

+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---