Toptal

Today we’re going to see how new technical possibilities and expectations from our users for real-time data-driven applications create new challenges in the way we structure our programs, especially our mobile applications. While this article is about iOS and Swift, many of the patterns and conclusions are equally applicable to Android and web applications.

There’s been an important evolution in how modern mobile apps work over the past few years. Thanks to more pervasive internet access and technologies like push notifications and WebSockets, the user usually is no longer the only source of runtime events—and not necessarily the most important one anymore—in many of today’s mobile apps.

Let’s take a closer look at how well two Swift design patterns each work with a modern chat application: the classic model-view-controller (MVC) pattern and a simplified immutable model-view-viewmodel pattern (MVVM, sometimes stylized “the ViewModel pattern”). Chat apps are a good example because

To read the full article click on the 'post' link at the top.