Re: __len vs __index

["Soni L." <fakedme@...>]

On 25/08/16 01:56 AM, Dirk Laurie wrote:
> 2016-08-25 0:16 GMT+02:00 Soni L. <fakedme@gmail.com>:
>
> > Why doesn't # respect __index? Is it because the behaviour of # is
> > implementation-defined and thus it shouldn't leak through __index?
> >
> > Would it be a big deal for # to leak through __index?
> >
> > Can we have both __index-friendly # and __len override?
> Consider the following code:
>
> ; a = setmetatable({1,2,3},{__index = function() return 0/0 end})
> ; print(#a)
> 3
>
> What should an index-friendly # return instead?

Never.

That is, it should never return.

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