Difference between revisions of "Module:No globals"
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meta>Xiplus m (Reverted changes by 126.243.104.167 (talk) to last version by Legoktm) |
meta>MusikAnimal m (Protected "Module:No globals": High-risk Lua module ([Edit=Allow only autoconfirmed users] (indefinite) [Move=Allow only autoconfirmed users] (indefinite))) |
(No difference)
| |
Revision as of 03:37, 14 February 2019
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)
