Are there anything similar to Java's "Future" in Swift?

Java has Future or FutureTask that can run a task in a new thread. Then, return the execution result to the original thread. Are there any feature in Swift can achieve that?

You're looking into some kind of language construction called Futures and promises. You can find some examples, like:

• https://bitbucket.org/al45tair/async (C#-like async/await primitives in Swift)
• https://github.com/mxcl/PromiseKit (Promise kit http://promisekit.org/)
• mentioned earlier https://github.com/Thomvis/BrightFutures

However the language itself misses such feature.