Difference between revisions of "Module:No globals"
From Canonical Works Universe Wiki
m (Reverted edits by 108.173.191.133 (talk) to last revision by Hashar) |
StarSumiaki (talk | contribs) m (1 revision imported) |
(No difference)
| |
Latest revision as of 20:50, 15 January 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)