typedef std::shared_ptr<Item> item_t;
typedef std::map<item_id_t, item_t> items_map_t;

	for(items_map_t::const_iterator currItem = items_.cbegin(); currItem != items_.cend(); ++currItem)
	{
		currItem->second->doWork(args);
	}

class testclass
{
public:
	void doWork() {}
};

typedef std::shared_ptr<testclass> item_t;
typedef std::map<int, item_t> items_map_t;

void func()
{
	items_map_t items_;
	for (items_map_t::const_iterator currItem = items_.cbegin(); currItem != items_.cend(); ++currItem)
	{
		currItem->second->doWork();
	}
}