Module:No globals: Difference between revisions
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No edit summary Tag: Manual revert |
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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) | |||
Latest revision as of 12:24, 1 August 2022
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)