How do I choose between std::thread and std::async in C++?

I'm trying to decide whether to use std::thread or std::async for my C++ project. Can you help?

Sure! The choice between std::thread and std::async depends on your specific use case. std::thread gives you more control over thread management, while std::async is easier for handling asynchronous tasks.

What are the main differences in terms of performance?

std::thread can be more efficient for long-running tasks since it allows you to manage threads directly. std::async, on the other hand, may introduce some overhead due to its automatic management of threads and futures.

Are there any scenarios where one is clearly better than the other?

Yes, if you need fine-grained control over thread execution and lifecycle, go with std::thread. If you want simplicity and don't need to manage threads manually, std::async is the way to go.

Can I mix both in my application?

Absolutely! You can use both std::thread and std::async in the same application, depending on the specific requirements of different tasks.