anything wrong by not using "module" ?

[Gaspard Bucher <gaspard@...>]

Hi list !

I am wondering if there is anything wrong when defining "classes" in this way (without using module):

======== file lk.Dir ===============================

local lib = {sep = '/', ignore_pattern = '^[.]', type='lk.Dir'}

lib.__index = lib

lk.Dir = lib

setmetatable(lib, {

  -- new method

 __call = function(table, arg)

  local instance = {path = arg}

  setmetatable(instance, lib)

  return instance

end})

-- private

local function some_helper(self, x, y)

  -- ...

end

-- public

function lib:glob(pattern)

  -- ...

end

--- etc

======== file lk.Dir ===============================