RE: Sub Procedures -- RPG400-L

I think you have to view it in terms of scope.  One nice thing about being
able to do sub-procedures is that you now define local variables instead of
global variables.  If you have a main program that uses the variable
'Count', your sub-procedure can also use a variable named 'Count' and never
worry about overriding what is in the main program.

A procedure can use global variables if it (the procedure) is defined
internally in the main program or it can define it's own local variables.

Now imagine what would happen if what you are looking for were possible:  I
have main program A with a field 'Count' defined as 5,0.  Main program B
also defines it, but as 7,0.  Both program callp sub-procedure C which needs
'Count'.  If the compiler had any way of finding the definition in the first
place (which it can't), then how would it know which one to use?  It's a
moot point anyway because neither A nor B will compile without the C object
being compiled and bound to it.

In other words, "It's not a bug it's a feature!" :-)

Joel R. Cochran
Director of Internet Services
VamaNet.com
(800)480-8810
mailto:webmaster@vamanet.com


> -----Original Message-----
> From: Justin Houchin [mailto:jhouchin9@charter.net]
> Sent: Wednesday, April 17, 2002 9:34 AM
> To: rpg400-l@midrange.com
> Subject: Re: Sub Procedures
>
>
> So what you are telling me is that I have to define them
> twice? And if so,
> is there another  way to accomplish what I',m trying to do
> without defining
> it twice.
>
>
> Justin Houchin
> Programmer
> Reliatek, Inc
> ----- Original Message -----
> From: "Peter Colpaert" <Peter.Colpaert@honda-eu.com>
> To: <rpg400-l@midrange.com>
> Sent: Wednesday, April 17, 2002 8:20 AM
> Subject: Re: Sub Procedures
>
>
> >
> > Justin,
> >
> > I think it's because the compiler needs to know the field
> definition at
> > compile time, and AFAIK there is no way to tell the
> compiler that this
> > module will be used in this or that RPG program.
> >
> > HTH,
> >
> > Peter Colpaert
> > Application Developer
> >
> > Honda Europe NV
> > Langerbruggestraat 104
> > B-9000 GENT
> > Peter.Colpaert@honda-eu.com
> > Tel: +32 9 2501 334
> > Fax: +32 9 2501 231
> > ----------
> > Program documentation is like sex: when it is good, it is
> very, very good;
> > and when it is bad, it is better than nothing.
> > ----------
> >
> >
> >
> >
> > Justin Houchin <jhouchin9@charter.net>@midrange.com on
> 17/04/2002 15:23:26
> > Please respond to rpg400-l@midrange.com
> > Sent by:  rpg400-l-admin@midrange.com
> >
> > To:   RPG Midrange <rpg400-l@midrange.com>
> >
> > cc:
> >
> > Subject:  Sub Procedures
> >
> >
> > This is a multi-part message in MIME format.
> > --
> > [ Picked text/plain from multipart/alternative ]
> > Hi Everyone,
> >     How come when you create a NOMAIN sub procedure that
> you have to set
> up the definitions for a field you are going to use twice?
> Why can't the sub
> > procedure use the same definitions that are already
> specified in the RPG
> Program?
> >
> >
> >
> > Justin Houchin
> > Programmer
> > Reliatek, Inc
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