Async/Await

In the real world, you cannot always control the code you work with. You will frequently need to integrate legacy systems, older Objective-C frameworks, or external SDKs into your modern Swift application. The problem arises when these external systems have interfaces that are completely incompatible with your app’s existing architecture. If you force your app to accommodate these legacy interfaces directly—like dealing with NSArray, untyped dictionaries, and completion handlers—your code quickly becomes a tightly coupled, unsafe mess. ...

Mobile devices are inherently mobile. Your users will walk into elevators, drive through tunnels, and seamlessly hop between Wi-Fi and 5G. Because of this, network requests fail—a lot. If your application instantly shows an error alert the millisecond a connection drops, you are providing a poor user experience. Instead, your app should gracefully handle transient network errors behind the scenes. This is where a Retry Mechanism comes in. Let’s explore why, when, where, and how to implement a robust retry strategy using modern Swift Concurrency. ...