Re: 5.2 feature list?

[Nick Gammon <nick@...>]

On 04/10/2006, at 6:01 PM, David Olofson wrote:

> 	procedure do_stuff(y)
> 	{
> 		for local x = 1, 10
> 			for local y = 1, 10
> 				<stuff>;
> 	}
>
> This will not compile, as the declaration 'local y' in the inner loop
> tries to redeclare the 'y' argument of the procedure. Same thing if x
> was declared outside the procedure; it wouldn't compile because
> 'local x' would be an attempted redeclaration.


However Lua currently allows redefinition, eg.

local y = 1;
f ()  -- uses 1st y
local y = 2;
f () -- uses 2nd y


I'm not sure the the solution doesn't introduce its own problems,  
possibly numerically as many as the ones it tries to fix.

How about this? Make a "lint" program that detects these things,  
outside the Lua interpreter itself, which is trying to be small and  
compact.

- Nick