lua-单例function newAccount(initlizedBanlance) local self = {balance = initlizedBanlance} local show = function (v)     self.balance = self.balance - v end   local getBanlance = function () return self.balance end  return  {           show = show           getBanlance = getBanlance  }end acc = newAccount (200)print (acc.getBanlance())acc.show (100)print (acc.getBanlance())--[[ 单例方法展示]]function newObject(value ) return function (action ,v ) if  action == "get" then      return value    elseif action == "set"then        value = v   else       error ("invalid action") end  end end d = newObject (0)print (d ("get"))d ("set", 10)print (d("get"))