Re: userdata as table-key

["Ashwin Hirschi" <deery@...>]

> Can you use userdata as a table key?

Yes.

> I need to associate a key (into a graphical wxLua control) with data. The key is returned as userdata.
> So I would like to say something like
>
> 	CtrlTable[newId] = {icnt, jcnt, kcnt}
[snip<]
> When I do this, and then say
>         print(string.format("Size of CtrlTable = %d",
> table.getn(gCtrlTable )))
>
> The result is 0.

Well, getn() is useful if you use the table as an array, that is: store values under the numeric keys 1, 2, 3, etc.. Since you're using the table with non-numeric keys getn() returns 0.

> Nor can I index the table using the newId key.  Where has
> the data gone?

In the example you give the table has a different name [i.e. one with a 'g' prepended]. Could this be the cause?

Ashwin.
--
no signature is a signature