C++ Shared Pointers vs Unique Pointers

What are the main differences between shared pointers and unique pointers in C++?

Shared pointers allow multiple pointers to own the same resource, while unique pointers ensure sole ownership.

When should I use shared pointers instead of unique pointers?

Use shared pointers when you need shared ownership, like in complex data structures. Use unique pointers for exclusive ownership.

Can you give an example of when to use each type?

Sure! Use a unique pointer for managing a single object, like a file handler. Use a shared pointer for a resource shared among multiple objects.

What are the performance implications of using shared pointers?

Shared pointers have overhead due to reference counting, which can impact performance. Unique pointers are more lightweight.

Are there any best practices for using these pointers?

Yes, prefer unique pointers when possible for better performance, and use shared pointers only when necessary to avoid memory overhead.