(From: https://en.wikipedia.org/wiki/Module:No_globals) |
m (Protected "Module:No globals": High traffic page ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))) |
(No difference)
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Latest revision as of 22:33, 20 June 2016
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)