DESCRIPTION In today's world, user interfaces have to be highly dynamic, asynchronous, and reliable. To meet these demands, the programming world is undergoing a radical shift towards something called Functional Reactive Programming (FRP), or just Reactive Programming. FRP offers programmers a new way to construct their applications so that they respond directly to change. And developers spend less time tracing obscure problems and more time focusing on what their code should be doing. Grokking Reactive User Interfaces teaches programmers a new way of thinking about programs and data as well as how to build robust and extensible user interfaces. This well-illustrated book presents lots of concrete, real-world problems and then shows how FRP helps to solve them. It begins by looking at examples that get readers into the mindset of data flows and goes on to introduce the concept of a View Model. Readers also learn how FRP enables them to better manage change and introduce new features. The final part of this book focuses on higherlevel application design concerns and strategies as you look at architectural approaches and frameworks that work well with FRP thinking. KEY FEATURES * Provides lots of illustrations and real-life app examples * Teaches a new way of thinking about programs and data * Using FRP in day-to-day programming * Teaches how to handle increasing complexity in UIs AUDIENCE Readers should have a basic understanding of mobile UI development and be familiar with traditional object-oriented programming paradigms. ABOUT THE TECHNOLOGY FRP offers a new way to construct applications so that they respond directly to change. FRP is not a typical technology B that obviously and immediately replaces an inferior technology A. It's more of a way of thinking rather than a mechanical solution.