What are some examples of smart pointers in C++?

What are some examples of smart pointers in C++?

In C++, smart pointers are objects that manage the lifetime of dynamically allocated memory. Examples include std::unique_ptr, std::shared_ptr, and std::weak_ptr.

Can you explain how std::unique_ptr works?

Sure! std::unique_ptr is a smart pointer that owns a dynamically allocated object exclusively. It cannot be copied, only moved, ensuring that there is only one unique_ptr managing the object.

What about std::shared_ptr? How is it different?

std::shared_ptr allows multiple smart pointers to share ownership of a single object. It keeps a reference count to manage the object's lifetime, deleting it when the last shared_ptr pointing to it is destroyed.

Are there any drawbacks to using smart pointers?

Yes, while smart pointers help manage memory, they can introduce overhead due to reference counting in shared_ptr and may lead to circular references if not used carefully.