The index metamethod can be set equal to tables. From what I can tell foo.__index = function(self, k) return bar[k] end and foo.__index = bar are the same. Why is declaring functions this wa...

In general, the syntax: for k, v in pairs(t) do .... end is equivalent to: for k, v in next, t do .... end But what if t has a __pairs metamethod? Will the standard next() function check fo...

Does anybody know actual implementation of lua 5.2. metamethod __pairs? In other words, how do I implement __pairs as a metamethod in a metatable so that it works exactly same with pairs()? I nee...