open is a new access level in Swift 3, introduced with the implementation of SE-0117 Allow distinguishing between public access and public overridability It is available with the Swift 3 snapshot from August 7, 2016, and with Xcode 8 beta 6. In short: An open class is accessible and subclassable outside of the defining module. … Read more
After a lot of research, I finally figured this one out. DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) { // Change `2.0` to the desired number of seconds. // Code you want to be delayed } This creates the desired “wait” effect in Swift 3 and Swift 4. Inspired by a part of this answer.
Creating a concurrent queue let concurrentQueue = DispatchQueue(label: “queuename”, attributes: .concurrent) concurrentQueue.sync { } Create a serial queue let serialQueue = DispatchQueue(label: “queuename”) serialQueue.sync { } Get main queue asynchronously DispatchQueue.main.async { } Get main queue synchronously DispatchQueue.main.sync { } To get one of the background thread DispatchQueue.global(qos: .background).async { } Xcode 8.2 beta 2: … Read more