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  • Subject: Re[2]: Legacy code.
  • From: Buck Calabro <mcalabro@xxxxxxxxxxxx>
  • Date: Tue, 16 Sep 1997 14:53:52 -0400

Chris said:

<snip>
>I did not mean to state that it should be used with OPM. What I meant
>about VA RPG is that I feel that RPG shops would be well served to develop
>graphic clients and that VA RPG is a good tool for that. 

Weeeeeellllll, since we're talking about legacy code, doesn't co-existence
make a big difference?


<snip about Workframe>
>The learning curve for OO _is_ severe. That is why ILE is a good idea. It
>is not really OO. Now, the ability to bind by reference and to declare
>private and public (exported or not exported) variables and functions
>(methods) is a step towards OO programming. However, there are key
>features to OO programming that are missing from this environment. Rather
>than get into that, I just want to point out that this (ILE) is a great
>step in a right direction..
>
>The modular approach is a big timesaver. One that most shops would
>practice anyway if the overhead from CALL/PARM wasn't so high. ILE
>overcomes the performance problem and give options for modularity. Service
>programs allow you to create as close to an "object" as you can get right
>now and allow you to seperate the development of underlying routines from
>the development of the high level application. 
>
>OO thinking is a big change from procedural. That's why so much C++ code
>is crap. What you need to do is not just learn to get what you want done
>within the limits of the language/environment, but also to utilize the
>features. I think that ILE is a good step, a median step for AS/400 shops
>with RPG programmers who cannot make the leap to OO..

OK.  I understand that I may have stepped over a linguistic threshold
when I mentioned OO, but I was trying to convey the thought that if I
take a S/36 programmer and turn her loose on ILE RPG, she's going
to write S/36 style code that compiles under ILE as opposed to 
writing true ILE code.  We're on the same page here...

Buck Calabro
Commsoft, Rensselaer, NY

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