What is the performance of std::map in C++?

What is the performance of std::map in C++?

The performance of std::map in C++ is generally O(log n) for insertions, deletions, and lookups due to its underlying red-black tree structure.

How does std::map compare to std::unordered_map?

std::unordered_map offers average O(1) time complexity for insertions and lookups, while std::map is O(log n). However, std::map maintains order.

When should I use std::map instead of std::unordered_map?

Use std::map when you need ordered elements or when you require range queries. Use std::unordered_map for faster access when order is not important.

Are there any performance considerations I should be aware of?

Yes, std::map has overhead due to maintaining order and tree balancing. If you frequently insert and delete, consider the impact on performance.