What are the performance benchmarks for C++ std::vector?

What are the performance benchmarks for C++ std::vector?

The performance of C++ std::vector can vary based on operations. For example, accessing an element is O(1), while inserting or deleting elements can be O(n) in the worst case.

How does std::vector compare to std::list in terms of performance?

std::vector generally offers better performance for random access and cache locality, while std::list is better for frequent insertions and deletions.

What factors can affect the performance of std::vector?

Factors include the size of the vector, the frequency of resizing, and the type of elements stored. Memory allocation can also impact performance.

Are there any best practices to optimize std::vector performance?

Yes, preallocating memory with reserve(), minimizing resizing, and using emplace_back() instead of push_back() can help optimize performance.