Re: __ipairs

["Soni \"They/Them\" L." <fakedme@...>]

On 2018-03-16 07:00 AM, Oliver Kroth wrote:
> > Uh, the only issue is that ipairs would "respect" nil, but otherwise 
> > it does/should work.
> >
> > But yes, being able to explicitly include nils in ipairs output, i.e. 
> > with __ipairs, would be nice.
> afaIk, getting nil from the iterator is what terminates the loop...

ipairs uses nil as a loop end

e.g.

t = {1, 2, 3, nil, 4}

for k, v in ipairs(t) do print(k,v) end

--[[
1 1
2 2
3 3
--]]

When using __index, it still stops on the first nil. It doesn't respect 
__len.

This means tuples without nil in them would iterate fine:

for k, v in ipairs(tuple(1, 2, 3)) do print(k,v) end

--[[
1 1
2 2
3 3
--]]

But tuples with nil would stop short.

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