Re: CONST and VALUE revisited

[Jeff Young <cooljeff913@xxxxxxxxx>]

Based on that info, CONST is enforced by the compiler ONLY if you are using sub-procedures.
If you are using an external service program or just another program, then using VALUE is the only way to ensure that the parameter will not be changed on return from the call.

Is this a correct summary?

Thanks,

Jeff Young 
Sr. Programmer Analyst
IBM -e(logo) server Certified Systems Exper - iSeries Technical Solutions V5R2 
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________________________________
From: sjl <sjl_abc@xxxxxxxxxxx>
To: rpg400-l@xxxxxxxxxxxx
Sent: Wednesday, January 28, 2009 1:09:18 PM
Subject: Re: CONST and VALUE revisited

David wrote:
> I thought I would read in the data area in my main procedure
> and then directly call a subprocedure with CONST on the parameter
> to protect my data area.
> However, from experience I've noticed that it is still possible to modify
> the parameter inadvertently, and we have already discussed this.
> Someone said that CONST in reality only means that the parameter
> is not INTENDED to be changed.

> So, I just thought it was a bit ironic : normally, I use CONST on all 
> parameters
> used for input. But now that I REALLY don't want my parameter to be 
> changed,
> I shall code VALUE instead.


David -

I have this page bookmarked:
http://www.web400.com/download/ilerpg/subprocedure_parameters2.htm

- sjl