Module:No globals: Difference between revisions

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m Protected "Module:No globals" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))
Aliser (talk | contribs)
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m Removed protection from "Module:No globals": unprotectification of non-high-use modules
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Revision as of 00:54, 20 May 2025

Documentation for this module may be created at 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)
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