Module:No globals: Difference between revisions
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m (5 revisions imported from w:en:Module:No_globals) |
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local mt = getmetatable(_G) or {} |
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function mt.__index (t, k) |
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if k ~= 'arg' then |
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error('Tried to read nil global ' .. tostring(k), 2) |
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end |
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return nil |
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end |
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function mt.__newindex(t, k, v) |
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if k ~= 'arg' then |
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error('Tried to write global ' .. tostring(k), 2) |
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end |
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rawset(t, k, v) |
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end |
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setmetatable(_G, mt) |
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Revision as of 03:41, 1 March 2017
Documentation for this module may be created at Module:No globals/doc