What are some common mistakes when using async in C++?

What are some common mistakes when using async in C++?

Some common mistakes include not handling exceptions properly, forgetting to join threads, and misusing futures.

Can you explain why forgetting to join threads is a mistake?

Forgetting to join threads can lead to resource leaks and undefined behavior, as the main thread may exit before child threads finish.

What about exception handling? How should I handle exceptions with async?

You should always check the future's status and handle exceptions using try-catch blocks to ensure your program remains stable.

Are there any best practices for using async in C++?

Yes, always prefer using std::async with std::launch::async, manage your resources carefully, and keep your code simple.