C++: std::list Iterators vs Vectors

What are the main differences between std::list and std::vector in C++?

The main differences include memory allocation, performance, and how elements are accessed. std::vector is a dynamic array, while std::list is a doubly linked list.

When should I use std::list instead of std::vector?

Use std::list when you need frequent insertions and deletions from the middle of the container, as it performs better in those scenarios.

Can you explain how iterators work with both std::list and std::vector?

Sure! Both containers support iterators, but std::vector uses random access iterators, allowing direct access to elements, while std::list uses bidirectional iterators, which only allow traversal in both directions.

What are the performance implications of using one over the other?

std::vector generally has better cache performance and is faster for accessing elements, while std::list has overhead due to node allocation but excels in insertions and deletions.