What is the performance of C++ std::list iterators?

What is the performance of C++ std::list iterators compared to std::vector?

C++ std::list iterators provide constant time complexity for insertions and deletions, while std::vector iterators have linear time complexity for these operations due to the need for shifting elements.

Are there any scenarios where std::list would be preferred over std::vector?

Yes, std::list is preferred when you need frequent insertions and deletions in the middle of the container, as it avoids the overhead of shifting elements.

What about memory usage between std::list and std::vector?

std::list generally uses more memory due to the overhead of storing pointers for each element, while std::vector has a contiguous memory layout, which is more memory efficient.

Can you give an example of when to use each?

Use std::vector for scenarios where you need fast random access and minimal insertions/deletions, and std::list for scenarios with frequent insertions/deletions.