Re: Turing-incomplete Lua?

[Jeff Koftinoff <jeffk@...>]

On 30-Nov-04, at 9:40 PM, Diego Nehab wrote:

> Hi,
>
> What is it that you are trying to accomplish? Concretely, what is it 
> that
> Lua can do that you don't want your description language to be able to
> do?
>
> []s,
> Diego.


this:
----------
	function a(b)
	 return a(b)
	end

a(1)
----------

And variations with multiple functions doing recursion,
or this:

	while length==1 do print(length) end

----------

Basically, anything with unknown or infinite loop counts.

So, maybe this precludes having functions at all?

I believe the Quake III scripting language has a special mode like this 
so that it is impossible for a user to bind a key to a function which 
hangs.  It severely limits the uses, of course, but it is still useful 
and effective....



Jeff

--
Jeff Koftinoff <jeffk@jdkoftinoff.com>
www.jdkoftinoff.com

Attachment: PGP.sig
Description: This is a digitally signed message part