How does one start a thread in Clojure?

Question

I\'ve read a lot about how great Clojure is when it comes to concurrency, but none of the tutorials I\'ve read actually explain how to create a thread. Do you just do (.start (T

Answer 1

The (future f) macro wraps the form f in a Callable (via fn*) and submits that to a thread pool immediately.

if you need a reference to a java.lang.Thread object, for instance, to use it as a java.lang.Runtime shutdown hook, you can create a Thread like this:

(proxy [Thread] [] (run [] (println "running")))

This will not start the thread yet, only create it. To create and run the thread, submit it to a thread pool or call .start on it:

(->
 (proxy [Thread] [] (run [] (println "running")))
 (.start))

Brians's answer also creates a thread but doesn't need proxy, so that's very elegant. On the other hand, by using proxy we can avoid creating a Callable.