Re: Memory leak?

[Hans Hagen <pragma@...>]

Patrick Donnelly wrote:
> I'm pretty sure this has to do with tables remembering "old" keys.
> This is important for next() when you try to check the next key/value
> pair 'after' removing the last...
>
> e.g.
>
> for k in pairs(t) do t[k] = nil end
>
> Note that if you try to call next() with an invalid key (one that was
> never in the table), you get an error raised.
>
> While assigning a new table does "fix" it, there probably should be
> some sort of collection of these unused keys.
>
> Note: I'm sure some of what I said is technically misleading (due to
> my misunderstanding), but I hope the general idea is understood.

i may be wrong but i think that

somevar = nil

is actually defining a variable; try this ...

a = nil
function abc() print(a) end
a = 'value is not nil'
abc()
a = nil
abc()
a = 'value is set again'
abc()

so, in your case, once you have a t[10] defined you can set it's value 
to nil, but that does not dispose the variable, only its value

Hans


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