class_sample.lua

Parent = {
  hoge = 1
}

function Parent:new (o)
  o = o or {}
  setmetatable(o, self)
  self.__index = self
  return o
end
function Parent:getHoge()
  return rawget(self, "hoge")
end

Child = Parent:new()

print(Child.hoge)
Child.hoge = 23
print(Child.hoge)
print(Child:getHoge())
print(rawget(Child, "hoge"))
function Child:getHoge()
  return "hoge"
end

print(Child:getHoge())

print(rawget(Child, "hoge"))