What are some alternatives to Boost's flat_map in C++11?

What are some alternatives to Boost's flat_map in C++11?

In C++11, you can use standard library features like std::map or std::unordered_map. They provide similar functionality.

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

Sure! std::map is ordered and uses a binary tree, while std::unordered_map is faster for lookups and uses a hash table.

When should I use std::map over std::unordered_map?

Use std::map when you need ordered elements or when you need to iterate in a sorted manner. Otherwise, prefer std::unordered_map for better performance.

Are there any performance considerations I should be aware of?

Yes, std::unordered_map generally offers average constant time complexity for lookups, while std::map has logarithmic time complexity.