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Module:No globals

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Version del 21:53, 3 april 2017 per 77.179.37.194 (discussion) (de https://en.wikipedia.org/wiki/Module:No_globals)
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Le documentation pro iste modulo pote esser create in Module:No globals/doc

local mt = getmetatable(_G) or {}
function mt.__index (t, k)
	if k ~= 'arg' then
		error('Tried to read nil global ' .. tostring(k), 2)
	end
	return nil
end
function mt.__newindex(t, k, v)
	if k ~= 'arg' then
		error('Tried to write global ' .. tostring(k), 2)
	end
	rawset(t, k, v)
end
setmetatable(_G, mt)