Re: constants?

[Ando Sonenblick <ando@...>]

I provide effectively a "API" to others writing lua scripts in my app 
and when I want to provide constants, I add a new entry in my 
"constants" table, named "id".

Thus, say I want a constant "defaultSize" or "redColor" and so on, they 
become:

id.defaultSize
id.redColor

and so on.. it's clean, all in a table, and by having them in the lua 
code start with id lets the casual obvserver see they are predefined 
constants...

ando

On Tuesday, October 7, 2003, at 08:20 AM, Pedro Miller Rabinovitch 
wrote:

> On Tuesday 07 October 2003 06:53, Brett Bibby wrote:
> > Does lua support preprocessor constants?  I'm guessing no by the
> > archived notes I did see.  As a lua newbie, is there a technical 
> > reason
> > it's not supported?
>
> I've never really felt the need for them. When I need that kind of 
> behaviour
> file-wise, I use something like
>
> local MY_CONSTANT = 10
> -- ...
> for i = 1, MY_CONSTANT do
>  --..., etc
> end
>
> If I need module-wide (and exported) constants, I place them inside my 
> "class"
> table, thus:
>
> MyClass = {}
>
> MyClass.HELLO_MSG = "Hello!\n"
>
> function MyClass:print_msg( message )
> 	print( 'MyClass says, "'..message..'".' )
> end
> ----- 8< --- another module ---- 8< ----
> MyClass:print_msg( MyClass.HELLO_MSG )
>
> ...or something to that effect.
>
> Hope that helps,
>
> Cheers,
>
> 	Pedro.
-----------------------
Ando Sonenblick
SpriTec Software
www.spritec.com