What are the best container choices in C++11?

What are the best container choices in C++11?

In C++11, the most commonly used containers are std::vector, std::list, std::deque, std::set, and std::map. Each has its own strengths.

Can you explain when to use std::vector over std::list?

Use std::vector when you need fast random access and when the size of the container is known in advance. std::list is better for frequent insertions and deletions.

What about std::unordered_map? When should I use it?

std::unordered_map is ideal when you need fast lookups and don't require the elements to be in any specific order. It's based on hash tables.

Are there any new features in C++11 that improve container performance?

Yes, C++11 introduced move semantics, which can significantly improve performance by allowing resources to be moved rather than copied.