Module:No globals

From Test Wiki
Revision as of 02:00, 10 August 2020 by mhtest>松 (1 revision imported from meta:Module:No_globals: Import template required for Template:Temporary prevention of automatic archiving)
Jump to navigation Jump to search

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://testwiki.wiki/index.php?title=Module:No_globals&oldid=14424"