Module:No globals: Difference between revisions
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>Jackmcbarn (rm name exception) |
>Xaosflux m (Changed protection level for "Module:No globals": Used in interface MediaWiki:Protectedpagetext ([Edit=Require administrator access] (indefinite) [Move=Require administrator access] (indefinite))) |
(No difference)
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Revision as of 21:29, 12 March 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)