Can a constant be global?

Graham Samuel livfoss at mac.com
Mon Mar 27 11:42:08 EST 2006


Recently, Robert Brenstein <rjb at robelko.com> wrote:
>
> RR's own constants are global because they are part of the language
> so do speak. As such, they are defined in the engine. That makes them
> a different beast than constant defined in your scripts.
>
> Replicating constant behavior at global level has been discussed
> quite a lot in the past, and not only on this list, but... it is a
> lot more complicated than it seems at first glance. So, for now at
> least, there is no way to make a global behave like a constant
> through declaration. It is up to you to designate some globals as
> global constants, like using a different prefix than for global
> variables.

Yup, that's what I've always done in the past: I just thought  
constant declarations might help, but clearly they won't - so I will  
stick to the tried and true method. I don't think Dave Burgun's  
'constant-value function' approach would gain me anything, because of  
the way I want to cluster all the constants together in a script. As  
I said, most of my 'constants' are in fact text strings, and I simply  
run a 'setUpParameters' handler during the initialisation of my app  
which sets them all (and a lot of other stuff besides, like menu names).

Thanks for the replies.

Graham


----------------------------------------
Graham Samuel / The Living Fossil Co. / UK and France




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