RE: OO in RPG

[Joel Fritz <JFritz@xxxxxxxxxxxxxxxx>]

Hmm...That's pretty neat.  You could create new instances of the "object" by
allocating memory and initializing variables (sub fields) in the service
program with a "constructor" method.  There could be a lot of bookkeeping
involved to make it well behaved.      

I just hope my boss doesn't ask me to develop a system like this real soon.
<g>
> -----Original Message-----
> From: bmorris@ca.ibm.com [mailto:bmorris@ca.ibm.com]
> Sent: Friday, December 01, 2000 2:42 PM
> To: RPG400-L@midrange.com
> Subject: RE: OO in RPG
> 
> 
> 
> >Date: Fri, 1 Dec 2000 09:10:41 -0800
> >From: Joel Fritz <JFritz@sharperimage.com>
> >
> >Abstract data types and true objects:  You can't really do 
> it, but service
> >programs can give you some of the features of an object.  
> Maybe someone
> else
> >has figured out a way to do it, but the sticking point is multiple
> instances
> >of the same object.
> 
> Joel,
> To get multiple instances of the same object, keep all the 
> instance data in
> a based data structure.   From the user's point of view, the 
> object is just
> a pointer that gets passed to the methods.  (To be safer, 
> have the service
> program keep an array of pointers and only give the user an 
> index into this
> array.)
> 
> Barbara Morris
> 
> 
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