What are the best practices for using smart pointers in C++?

What are the best practices for using smart pointers in C++?

When using smart pointers in C++, prefer std::unique_ptr for exclusive ownership and std::shared_ptr for shared ownership.

Can you explain when to use std::weak_ptr?

Use std::weak_ptr to break circular references in std::shared_ptr, preventing memory leaks.

What are the performance implications of using smart pointers?

Smart pointers can introduce slight overhead due to reference counting, but they improve safety and manage memory automatically.

Are there any common pitfalls to avoid with smart pointers?

Yes, avoid mixing raw pointers and smart pointers, and be cautious with ownership semantics to prevent dangling pointers.