When should I use std::unique_ptr in C++?

What is std::unique_ptr and when should I use it?

std::unique_ptr is a smart pointer in C++ that manages the lifetime of a dynamically allocated object. You should use it when you want to ensure that an object is automatically deleted when it goes out of scope, preventing memory leaks.

Can you give me an example of how to use std::unique_ptr?

Sure! Here's a simple example:

#include <memory>

void example() {
    std::unique_ptr<int> ptr = std::make_unique<int>(10);
    // ptr will automatically delete the allocated memory when it goes out of scope.
}

What are the advantages of using std::unique_ptr over raw pointers?

The main advantages are automatic memory management, prevention of memory leaks, and clearer ownership semantics. Unlike raw pointers, std::unique_ptr ensures that the memory is freed when the pointer goes out of scope.

Are there any situations where I shouldn't use std::unique_ptr?

Yes, you shouldn't use std::unique_ptr when you need shared ownership of an object. In such cases, std::shared_ptr would be more appropriate.