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

Can you explain the differences between unique_ptr and raw pointers in C++?

Sure! unique_ptr is a smart pointer that manages the lifetime of a dynamically allocated object, ensuring that it is deleted when the unique_ptr goes out of scope. In contrast, raw pointers do not manage memory automatically, which can lead to memory leaks if not handled properly.

What are the advantages of using unique_ptr over raw pointers?

The main advantages of unique_ptr include automatic memory management, prevention of memory leaks, and better exception safety. It also provides a clear ownership model, making it easier to understand who is responsible for deleting the object.

Are there any situations where I should still use raw pointers?

Yes, raw pointers can be useful in certain situations, such as when you need to interface with legacy code, or when performance is critical and you want to avoid the overhead of smart pointers. However, use them cautiously!

Can unique_ptr be used with arrays?

Yes, unique_ptr can manage arrays by using std::unique_ptr<Type[]>. However, you need to be careful with the syntax and ensure you use the correct deleter.