You want std::vector::emplace_back. I think technically you could use unique_ptr and transfer ownership (move) when pushing into the vector, but the underlying

You want std::vector::emplace_back. I think technically you could use unique_ptr and transfer ownership (move) when pushing into the vector, but the underlying "bad pattern" here is that you almost never want to have a vector of (smart) pointers. The vector should own the objects directly.