Best Practices for Using Ordered Maps in C++11

What are the best practices for using ordered maps in C++11?

When using ordered maps in C++11, consider the following best practices: 1. Use std::map for sorted key-value pairs. 2. Prefer std::unordered_map for faster access when order is not important. 3. Utilize emplace for efficient insertion.

Can you explain the difference between std::map and std::unordered_map?

Certainly! std::map maintains order and uses a balanced tree structure, while std::unordered_map uses a hash table for faster access but does not maintain order.

What are some common use cases for ordered maps?

Common use cases for ordered maps include maintaining a sorted list of items, implementing priority queues, and when you need to iterate over elements in a specific order.

Are there any performance considerations I should be aware of?

Yes, std::map has logarithmic time complexity for insertions and lookups, while std::unordered_map offers average constant time complexity. Choose based on your performance needs.