Module:No globals: Difference between revisions
From Wayne's Dusty Box of Words
m (7 revisions imported from meta:Module:No_globals) |
ll>MusikAnimal (Undid revision 948472525 by [[Special:Contributions/w>DiBabelYurikBot|w>DiBabelYurikBot]] ([[User talk:w>DiBabelYurikBot|talk]])) |
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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 read nil global ' .. tostring(k), 2) | |||
error | |||
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) | ||
Revision as of 22:28, 31 March 2020
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)
