What are the differences between unique_ptr and raw pointers in C++11?

What are the differences between unique_ptr and raw pointers in C++11?

In C++11, unique_ptr is a smart pointer that manages the lifetime of an object, ensuring it is deleted when no longer needed, while raw pointers do not manage memory automatically.

Can you explain how unique_ptr helps prevent memory leaks?

Certainly! unique_ptr automatically deletes the associated object when it goes out of scope, which helps prevent memory leaks that can occur with raw pointers if they are not manually deleted.

Are there any performance differences between using unique_ptr and raw pointers?

Generally, unique_ptr has a slight overhead due to its management features, but it provides better safety and can lead to more maintainable code, which often outweighs the performance cost.

When should I prefer using unique_ptr over raw pointers?

You should prefer unique_ptr when you want to ensure automatic memory management and avoid manual deletion, especially in complex applications where memory management can become error-prone.