How do I use Futures in Scala?

How do I use Futures in Scala?

Futures in Scala allow you to perform asynchronous computations. You can create a Future using the Future.apply method.

Can you show me a simple example?

Sure! Here's a basic example:

import scala.concurrent.Future
import scala.concurrent.ExecutionContext.Implicits.global

val futureResult = Future {
  // Simulate a long-running computation
  Thread.sleep(1000)
  42
}

futureResult.onComplete { result =>
  println(s"The result is: $result")
}

What happens if the Future fails?

If a Future fails, it will complete with a failure. You can handle this using the onComplete or recover methods.

Can I combine multiple Futures?

Yes, you can combine multiple Futures using methods like Future.sequence or Future.traverse.