Re: table reset

[Kaos <kaos@...>]

Jamie Webb wrote:

> On Mon, Jul 12, 2004 at 07:48:00AM +0200, Kaos wrote:
>  
>
> > Jamie Webb wrote:
> >    
> >
> > > On Sat, Jul 10, 2004 at 06:44:21PM +0200, Markus Huber wrote:
> > >      
> > >
> > > > -- Wich version is better and why? Any suggestions are welcome.
> > > >        
> > > [snip] In fact, as written, it won't work at all. The declaration of
> > > Lines needs to be moved outside the loop.
> > >      
> > I would agree, if it wasn't for the ... or {} part, which I actually 
> > think would make it work as intended (not tested).
> >    
>
> Nope. That line will just always be equivalent to 'local Lines = {}',
> i.e. all lines will be discarded immediately after they are read. The
> problem is that because Lines is declared inside the loop, its scope
> does not extend across iterations.
>
> -- Jamie Webb
>  
Hmmm... got to look closer at what's happening here (remeber some pseudo 
code about loops from the manual)...
but I've verified the fact:

> do
>> local i = 0
>> while i < 5 do
>> local foo = foo or {}
>> foo[i] = i ^ 2
>> i = i + 1
>> print( "foo ", foo, "\n" )
>> table.foreach(foo, print)
>> end
>> end
foo     table: 0x808e140

0       0
foo     table: 0x808fd58

1       1
foo     table: 0x8090688

2       4
foo     table: 0x808eca8

3       9
foo     table: 0x808e910

4       16
>