Re: Userdata with methods *and* table access.

[David Jones <drj@...>]

On Oct 14, 2004, at 01:16, Tom Spilman wrote:

> > -----Original Message-----
> > From: lua-bounces@bazar2.conectiva.com.br
> > [mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of David Given
> > Sent: Wednesday, October 13, 2004 4:44 PM
> > To: Lua list
> > Subject: Re: Userdata with methods *and* table access.
>
> > * You musn't read past the end of the string, because you may
> > overrun the memory block and cause a segmentation fault.
> > That's why you need the if statement in the first example.
>
>  True, but could Lua ever pass an empty key to the __index metamethod?

You mean a key that is a string that is empty?  Sure:

a[""] = 7

Anything apart from nil can be used as a table key.

a[function()end]=7

David Jones