What is the difference between unique_ptr and shared_ptr in C++?
Unique pointers (unique_ptr) are exclusive ownership pointers, while shared pointers (shared_ptr) allow shared ownership.
When should I use unique_ptr instead of shared_ptr?
Use unique_ptr when you want sole ownership of a resource, which can improve performance and reduce overhead.
Can you give an example of when to use shared_ptr?
Use shared_ptr when multiple parts of your program need to share ownership of an object, like in a graph structure.
Are there any downsides to using shared_ptr?
Yes, shared_ptr has overhead due to reference counting and can lead to circular references if not managed properly.
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