How do I use unique_ptr with arrays in C++?

How do I use unique_ptr with arrays in C++?

You can use std::unique_ptr with arrays by specifying the array type in the template. For example: std::unique_ptr<int[]> ptr(new int[10]);.

What happens if I forget to use the array version of unique_ptr?

If you use std::unique_ptr<int> instead of std::unique_ptr<int[]>, it won't correctly manage the array's memory, leading to undefined behavior.

Can I use unique_ptr with a custom deleter for arrays?

Yes, you can use a custom deleter by passing it as a second argument: std::unique_ptr<int[], CustomDeleter> ptr(new int[10], CustomDeleter());.

Are there any performance implications of using unique_ptr with arrays?

Using unique_ptr with arrays generally has minimal overhead compared to raw pointers, but it provides better memory management.