Difference between revisions of "Module:No globals"
From Wicri Belgium
m (1 revision imported) |
m (1 revision imported) |
(No difference)
| |
Latest revision as of 19:48, 10 January 2021
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)
