Tutorial by Topics: delegate

Summary A delegate type is a type representing a particular method signature. An instance of this type refers to a particular method with a matching signature. Method parameters may have delegate types, and so this one method to be passed a reference to another method, which may then be invoked...

public delegate TResult Func<in T, out TResult>(T arg) public delegate TResult Func<in T1, in T2, out TResult>(T1 arg1, T2 arg2) public delegate TResult Func<in T1, in T2, in T3, out TResult>(T1 arg1, T2 arg2, T3 arg3) public delegate TResult Func<in T1, in T2, in T3, in T4...

Please see the Apple Documentation for more information regarding privacy. Make sure the Music app is available in your iPhone. It will not work in the simulator.

Protocols and Delegates are two related but different concept: A Protocol is a interface a class can conforms to, meaning that class implements the listed methods. A Delegate is typically an anonymous object that conforms to a protocol. The application of Delegate called Delegation is a design ...

WCSessionDelegate works with watch OS2 + using WatchConnectivity. var watchSession : WCSession? func startWatchSession(){ if(WCSession.isSupported()){ watchSession = WCSession.default() watchSession!.delegate = self ...

AppDelegate is a protocol which defines methods that are called by the singleton UIApplication object in response to important events in the lifetime of an app. Normally used to perform tasks on application startup (setup app environment, analitycs (ex.: Mixpanel/GoogleAnalytics/Crashlitics), DB st...

Pattern for adding multicasting capabilities to existing iOS controls. Adding multicasting allows for improved clarity and code re-use.

Kotlin can delegate the implementation of a property to a handler object. Some standard handlers are included, such as lazy initialization or observable properties. Custom handlers can also be created.

It is often useful to present a first-run experience to new users of your App. This could be for any number of reasons, such as prompting them to sign in (if required for your situation), explaining how to use the App, or simply informing them of new features in an update (as Notes, Photos and Music...