Module:No globals: Difference between revisions

From Vigyanwiki
(Undid revision 948472525 by [[Special:Contributions/w>DiBabelYurikBot|w>DiBabelYurikBot]] ([[User talk:w>DiBabelYurikBot|talk]]))
m (9 revisions imported from alpha:Module:No_globals)
 
(5 intermediate revisions by 3 users not shown)
(No difference)

Latest revision as of 14:06, 12 December 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)
Retrieved from ‘https://www.vigyanwiki.in/index.php?title=Module:No_globals&oldid=37696’