Re: __ipairs
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- Subject: Re: __ipairs
- From: "Soni \"They/Them\" L." <fakedme@...>
- Date: 2018年3月16日 07:04:57 -0300
On 2018年03月16日 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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