What is the iOS (or RubyMotion) idiom for waiting on a block that executes asynchronously?

Question

I have been pulling my hair out for weeks on this niggling problem, and I just can\'t find any info or tips on how or what to do, so I\'m hoping someone here on the RubyMoti

Answer 1

as borrrden just said, I'd use a dispatch_semaphore

 def ApiHelper.make_sync(&block)
   @semaphore = Dispatch::Semaphore.new(0)
   BubbleWrap::Reactor.schedule do
     # do your stuff
     @result = block.call()
     @semaphore.signal
   end
   @semaphore.wait
   @result
 end

this is how I'd handle it on Rubymotion