Re: Another ILE question : CONST vs VALUE

["Glenn Gundermann" <ggundermann@xxxxxx>]

David,

I use CONST for read-only parms.  This way I can pass in text (e.g. 'ABC')
without using an intermediate variable, as well as expressions.  You must
use CONST in both the caller and called program and then it can't be
changed.

Hope this helps.

Glenn Gundermann
ggundermann@xxxxxx
(647) 272-3295

> Here's another one I can't get my head round.
>
> I understand the difference between passing parameters by reference and by
> value.
>
> When we started ILE, the powers that be imposed on us the keyword CONST
> systematically for all parameters destined to be used as input parameters.
>
> That way, you can't change the parameter in your program. YOU can't but
> your programme certainly can!.
>
> Anyone else had this problem? What's the point of using CONST instead of
> VALUE apart from performance issues? I'd say that if I see VALUE on a
> parameter I'm sure that it wasn't intended to be changed in the procedure.