Difference between revisions of "Module:No globals"

@@ Line 1: / Line 1: @@
-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)

Revision as of 03:41, 1 March 2017