What is C++ async and how does it work?

What is C++ async and how does it work?

C++ async is a function that allows you to run tasks asynchronously, meaning they can run in parallel without blocking the main thread.

Can you give me an example of how to use C++ async?

Sure! You can use std::async to run a function asynchronously. For example:

#include <future>
#include <iostream>

int compute() {
    return 42;
}

int main() {
    std::future<int> result = std::async(compute);
    std::cout << "Result: " << result.get() << std::endl;
}

What are the benefits of using async in C++?

Using async allows for better resource utilization, improved responsiveness in applications, and can simplify code for concurrent tasks.

Are there any drawbacks to using C++ async?

Yes, potential drawbacks include increased complexity in error handling, possible performance overhead, and challenges in debugging asynchronous code.