When should I use async vs threads in C++?

When should I use async vs threads in C++?

Great question! Use async for tasks that can run concurrently without blocking, while threads are better for parallel execution.

Can you give me an example of when to use each?

Sure! Use async for I/O-bound tasks like file reading, and threads for CPU-bound tasks like complex calculations.

What are the performance implications of each?

async can be more efficient for I/O-bound tasks due to its non-blocking nature, while threads may have overhead from context switching.

Are there any downsides to using async?

Yes, async can lead to more complex error handling and may not be suitable for all scenarios, especially if you need fine control over threads.