RE: Classes/Objects compared to SRVPGMs

Joe,

I re-reading my answer I see that the sentences can be misread in that
sense that one could read that I am an avid fan of OO-languages at the
cost of 'ye olde programming styles'. This is not the case, I am really
in your corner here, one should use a screwdriver to hammer in a nail
nor should a hammer be used to drive a screw into wood. The right tools
for the right job and a solid 'business case' should be made concerning
the choice of programming language(s) is made.

I know that RPG can be used to make reusable code, better still: I think
that should be strived for as much as possible -within reason-. Both OO
and procedural concepts have their places and advantages.

Cor

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-
bounces@xxxxxxxxxxxx] On Behalf Of Joe Pluta
Sent: vrijdag 20 juni 2008 15:04
To: RPG programming on the AS400 / iSeries
Subject: Re: Classes/Objects compared to SRVPGMs

Takken, Cor wrote:

What I do want to point out - and yes, I will keep on hammering

about

that ;) - is that 'old fashioned' programming styles (what we are

used

to and love in RPG, Cobol, C and what have you in that area) can

never

be compared in functionality and use to OO programming styles with

the

whole concept of inheritance and reuse through classes/objects and

what

have you which is used in Smalltalk, Java, C++ and the likes.

I'm not going to get too far down this particular alley, because it's

a

blind one, but the idea that OO programming is inherently better than
procedural is a topic that's been beaten to death here, Cor. The
suitability of a giving programming technique for a given purpose
depends a lot upon the programmer, but the idea that RPG can't provide
code reuse is simply untrue.

We can argue all day about whether inheritance is actually a benefit -
the OO experts seems to be leaning more towards composition rather

than

inheritance as it becomes clear that complex object hierarchies lead

to

brittle software - but at the end of the day, the trick is

productivity

and procedural programming still has its place.

To insist otherwise is to have never written business logic with a

good

procedural programmer.

Joe
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