How do I handle errors in async C++ libraries?

How do I handle errors in async C++ libraries?

In async C++ libraries, you can handle errors using futures and exceptions. When a task fails, it can throw an exception that you can catch when you retrieve the result.

Can you give me an example of using futures for error handling?

Sure! Here's a simple example:

std::future<int> future = std::async([]() -> int {
    throw std::runtime_error("Error occurred");
});

try {
    int result = future.get();
} catch (const std::exception& e) {
    std::cerr << "Caught exception: " << e.what() << std::endl;
}

What about using callbacks for error handling?

Using callbacks is another approach. You can pass a callback function that handles errors when the async operation completes. This way, you can separate error handling from the main logic.

Are there any libraries that simplify this process?

Yes, libraries like Boost.Asio and libuv provide abstractions for async programming and often include built-in error handling mechanisms.