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- Subject: Re: __len vs __index
- From: Dirk Laurie <dirk.laurie@...>
- Date: Thu, 25 Aug 2016 06:56:04 +0200
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?
