Module:No globals: Difference between revisions

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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)

Revision as of 05:41, 1 March 2017

Documentation for this module may be created at Module:No globals/doc
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