Re: Speed comparison (now scoping)
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- Subject: Re: Speed comparison (now scoping)
- From: Fred Bertsch <fb@...>
- Date: Fri, 4 Jun 1999 12:26:43 -0400 (EDT)
On Fri, 4 Jun 1999 rw20@cornell.edu wrote:
> The two options I thought of are
> 1. just make variable assignment default to local inside functions
> 2. require declaration of all globals and locals inside functions
>
> Both options break old code though. So the would need to be a
> variable_mode or a new "function" keyword. The second option kind of
> goes against the "easy to write code" model of lua. Option one coupled
> with requiring all locals to be declared (as it is now) is the best solution.
> Assigning to something not declared as local or as an arguement would be
> an error.
Here's another possibility: if you created a getglobal and setglobal
tag that worked on everything, you could implement something yourself.
(Personally, I would just disable global assignment once all the functions
are defined.)
I'm not sure what the speed penalty would be for that. Obviously, since I
don't assign to globals very often, a setglobal tag wouldn't slow things
down much. getglobal might be too slow, though, since it would be used on
all function calls. I could live with just a setglobal tag, though.
F