问题
I have the following code that I've been trying to translate into swift 3 from swift 2. Here is what I have so far.
DispatchQueue.async(group: DispatchQueue.global(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),execute: {
self.controllerDelegate?.codeToRun(progressWindowViewController: self)
})
I am getting an error that says Cannot invoke 'global' with an argument list of type (int,int). I know that the global queue needs this though unless they changed it in swift 3? What is the correct way to do global queues in Swift 3?
Previous Swift 2 Equivlent
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),{
self.controllerDelegate?.codeToRun(self)
})
回答1:
Try this it will work.
DispatchQueue.global(qos: .background).async {
DispatchQueue.main.async {
}
})
If you still need any help feel free to ask here.
回答2:
Actually, a closer and simpler approach to your question would be:
DispatchQueue.global(qos: .default).async { ... }
来源：https://stackoverflow.com/questions/39744291/swift-2-to-3-migration-dispatch-get-global-queue