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Date:	Mon, 5 Aug 2002 18:25:46 PST7
From:	Harry Chris Motin <hmotin@attglobal.net >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Re: versions of Rexx

Content Type: text/plain

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J.R.,

>The 2 versions are not 100% compatible, but nearly so.

What I meant to say here is that OREXX is not 100% fully backwards
compatible with CREXX, but almost!
HCM
______________________________________________________________________________

Harry Chris Motin wrote:
>
> =====================================================
> If you are responding to someone asking for help who
> may not be a member of this list, be sure to use the
> REPLY TO ALL feature of your email program.
> =====================================================
>
> J.R.,
>
> Both Object and Classical REXX come FREE with Warp (I don't remember
> which version, either 3 or 4). The 2 versions are not 100% compatible,
> but nearly so. There are some things fixed in Object REXX and there are
> a few things that work differently (read that as "better") in Object
> REXX.
>
> When you first try to run a program under OREXX, the REXX interpreter
> scans it first and determines whether or not there are any coding
> errors. If so, it refuses to run and instead tells you about the errors.
> In CREXX a program runs until it reaches the error, then stops.
>
> Also, I believe that there are 1 or 2 instances of incorrect, or
> improper, coding that you could get away with using CREXX, but not
> OREXX. Therefore, if you made any of these coding errors your program
> will run under CREXX but not under OREXX. You have to fix the errors to
> have it run in Object.
>
> On my system I use VisProREXX. When I save a VisPro project/program as
> an *.exe executable, and also I am using Object REXX, then it will
> refuse to run, if I switch to CREXX (or vise versa). I have to resave
> the VisProREXX executable under CREXX after I have switched to CREXX.
>
> Bet this is more than you wanted to know. Right?
>
> HCM
>
> ______________________________________________________________________________
>
> "J. R. Fox" wrote:
> >
> > =====================================================
> > If you are responding to someone asking for help who
> > may not be a member of this list, be sure to use the
> > REPLY TO ALL feature of your email program.
> > =====================================================
> >
> > HCM wrote:
> >
> > > The best and easiest fix would be for you to switch your system to
> > > Object REXX. Do so by going to a commandline and switching to the "OS2"
> > > directory where your OS is installed (like "C:\OS2"). Then type
> > > "SWITCHRX.CMD" at the commandline. Then reboot.
> > >
> > > Object REXX is better. There are more functions and enhanced functions.
> > > Upon rebooting the system replaces the help file for Classical REXX with
> > > the corresponding help file for Object REXX. You probably won't notice
> > > any difference between Classical and Object REXX, except greater
> > > functionality.
> > >
> > > If you do not want to switch
> >
> > >From what you say, and based on the inference that Object is going to be backwards compatible for routines written in Classical -- but NOT vice-versa -- is
> > there any possible reason *against* making this changeover ? I was not aware that this stuff was all (apparently) included, previously being under the
> > impression that one had to go out and purchase Object REXX separately. If it's already there, or free for download somewhere, that would make it easy.
> >
> > Jordan
> >
> > =====================================================
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