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On 25/08/16 01:56 AM, Dirk Laurie wrote:
2016-08-25 0:16 GMT+02:00 Soni L. <>:

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)

What should an index-friendly # return instead?


That is, it should never return.

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