Can a constant be global?

Jim Ault JimAultWins at yahoo.com
Mon Mar 27 11:49:56 EST 2006


You could have fields on a card in a lib stack that hold the constant
values, then access them from any stack.  In fact, the 'contantsVals.rev'
stack does not even have to be open.

A lib function could retrieve the value in any handler without having to
declare 'globals'

Jim Ault
Las Vegas


On 3/27/06 8:42 AM, "Graham Samuel" <livfoss at mac.com> wrote:

> 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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