How do C++ containers affect performance?

How do C++ containers affect performance?

C++ containers, like vectors and lists, have different performance characteristics. For example, vectors provide fast random access but can be slow for insertions and deletions compared to lists.

What are the trade-offs between using std::vector and std::list?

The trade-offs include memory usage and access speed. std::vector is more memory-efficient and offers better cache performance, while std::list allows for faster insertions and deletions.

When should I prefer using std::deque?

Use std::deque when you need fast insertions and deletions at both ends of the container, as it provides better performance for these operations compared to std::vector.

Are there any performance considerations for using std::map?

Yes, std::map is implemented as a balanced tree, which means it has logarithmic time complexity for insertions, deletions, and lookups. If you need faster access, consider using std::unordered_map.