error: ‘template<class> class std::auto_ptr’ is deprecated

这个错误是因为 `std::auto_ptr` 已经被标记为废弃，不再建议使用。建议使用 `std::unique_ptr` 代替。你可以将代码中所有 `std::auto_ptr` 替换为 `std::unique_ptr`，这样就可以避免这个错误了。注意，`std::unique_ptr` 与 `std::auto_ptr` 不同，需要使用 `std::move` 将指针所有权转移。

相关问题

std::atomic<std::shared_ptr<T>>

std::atomic is a C++ class template that provides atomic operations on its template parameter. In this case, the template parameter is std::shared_ptr<T>, which is a type of smart pointer that manages a reference-counted object.

The std::atomic<std::shared_ptr<T>> class template ensures that operations on the shared_ptr object are atomic, meaning that they are indivisible and cannot be interrupted by other threads. This prevents race conditions and ensures that the shared_ptr object is always in a consistent state.

The atomic operations provided by std::atomic<std::shared_ptr<T>> include load, store, and exchange. These operations allow multiple threads to access and modify the shared_ptr object without causing data races or other synchronization issues.

Overall, std::atomic<std::shared_ptr<T>> is a powerful tool for managing shared resources in a multithreaded environment, providing a safe and efficient way to share data between threads.

std::make_unique<>()用法

std::make_unique<>()是C++11引入的一个函数模板，用于创建一个unique_ptr智能指针对象。它的语法如下：

template<class T, class... Args>
std::unique_ptr<T> make_unique(Args&&... args);

使用std::make_unique<>()可以避免手动new一个对象，同时也可以避免内存泄漏等问题。