Module:No globals: Difference between revisions
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metawikimedia>DiBabelYurikBot m Copying one change by Mainframe98: "From Module:No globals/sandbox, per Topic:Uyr5gphaxbpe5k4h" from mw:Module:No globals. (docs, translate) |
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| Line 2: | Line 2: | ||
function mt.__index (t, k) | function mt.__index (t, k) | ||
if k ~= 'arg' then | if k ~= 'arg' then | ||
error('Tried to view nil global ' .. tostring(k), 2) | |||
end | end | ||
return nil | return nil | ||
| Line 9: | 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) | ||