How can I optimize the performance of std::map in C++11?

How can I optimize the performance of std::map in C++11?

To optimize std::map in C++11, consider using std::unordered_map for faster lookups, as it has average O(1) complexity.

What are the trade-offs between std::map and std::unordered_map?

std::map maintains order and has O(log n) complexity for lookups, while std::unordered_map is faster but does not maintain order.

Are there specific scenarios where std::map is preferred?

Yes, use std::map when you need ordered data or when you require range queries, as it supports iterators in sorted order.

How can I measure the performance difference between the two?

You can use benchmarking tools like Google Benchmark to measure the performance of std::map vs std::unordered_map in your specific use case.