Indeed, you are correct. function obj:method(arg) .. end is the same as function obj.method(obj,arg) .. end I think the reason I mentioned the latter is

Indeed, you are correct. function obj:method(arg) .. end is the same as function obj.method(obj,arg) .. end I think the reason I mentioned the latter is I generally use Lua closures to code the way Eckel preferrs. "Objects are a poor man's closures" -- Norman Adams