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Module:No globals: Difference between revisions
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function mt.__index (t, k) | function mt.__index (t, k) | ||
if k ~= 'arg' then | if k ~= 'arg' then | ||
error(' | error('Tried to read nil global ' .. tostring(k), 2) | ||
end | end | ||
return nil | return nil | ||
| Line 8: | Line 8: | ||
function mt.__newindex(t, k, v) | function mt.__newindex(t, k, v) | ||
if k ~= 'arg' then | if k ~= 'arg' then | ||
error(' | error('Tried to write global ' .. tostring(k), 2) | ||
end | end | ||
rawset(t, k, v) | rawset(t, k, v) | ||
end | end | ||
setmetatable(_G, mt) | setmetatable(_G, mt) | ||