class LinkedListNode {
int data_;
LinkedListNode *next_;
};
class LinkedList {
public:
void insert(LinkedListNode* &p);
void del(LinkedListNode *p);
private:
LinkedListNode *head_;
};
LinkedList list; LinkedListNode *p = new LinkedListNode(2, NULL); list.insert(p);
template<typename CallBack>
class LinkedList
{
public:
void insert(LinkedListNode* &p);
void del(LinkedListNode *p);
private:
LinkedListNode *head_;
};
void del(LinkedListNode *p)
{
//...
LinkedListNode *prev = get_prev(p);
prev->next_ = p->next_;
CallBack cb;
cb(p);//调用用户提供的资源回收例程
}
class MyReclaimRoutine { public: void operator() (LinkedListNode *p) { delete p; //free(p) ? my_release_func(p) ? all up to you! } };
LinkedList<MyReclaimRoutine> list; LinkedListNode *p = new LinkedListNode(2, NULL); list.insert(p); list.del(p);//ok! delete p will be called
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