Is there any way to retrieve the dispatcher from a coroutine context?

yes, but there generally isn't a lot of reason to, why?

I'm wrapping a 3rd party API that expects an executor in a

suspendCancellableCoroutine

. I want to be able to get the dispatcher from the continuation's context and turn that into an executor

thought that might be it. 🙂 You don't need to. Use a directExecutor and just resume the continuation with the right result, it'll dispatch to the right CoroutineDispatcher as part of resuming the continuation

Is that from Guava?

Yes but you can make your own trivially:

object DirectExecutor : Executor {
  override fun execute(r: Runnable) {
    r.run()
  }
}

Interesting. Thanks!