They are called functional interfaces because each of them has only one abstract method—a Single Abstract Method (SAM). They are also called functional types because they are used as method parameters (by Observable operators, for example). You have to be very familiar with them in order to avoid re-inventing the wheel and creating a custom interface while a corresponding interface is already provided with the library.
Learning RxJava - Second Edition
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Learning RxJava - Second Edition
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Overview of this book
RxJava is not just a popular library for building asynchronous and event-based applications; it also enables you to create a cleaner and more readable code base. In this book, you’ll cover the core fundamentals of reactive programming and learn how to design and implement reactive libraries and applications.
Learning RxJava will help you understand how reactive programming works and guide you in writing your first example in reactive code. You’ll get to grips with the workings of Observable and Subscriber, and see how they are used in different contexts using real-world use cases. The book will also take you through multicasting and caching to help prevent redundant work with multiple Observers. You’ll then learn how to create your own RxJava operators by reusing reactive logic. As you advance, you’ll explore effective tools and libraries to test and debug RxJava code. Finally, you’ll delve into RxAndroid extensions and use Kotlin features to streamline your Android apps.
By the end of this book, you'll become proficient in writing reactive code in Java and Kotlin to build concurrent applications, including Android applications.
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Current Title:
Learning RxJava - Second Edition
Table of Contents (22 chapters)
Preface
Section 1: Foundations of Reactive Programming in Java
Free Chapter
Thinking Reactively
Observable and Observer
Basic Operators
Section 2: Reactive Operators
Combining Observables
Multicasting, Replaying, and Caching
Concurrency and Parallelization
Switching, Throttling, Windowing, and Buffering
Flowable and Backpressure
Transformers and Custom Operators
Section 3: Integration of RxJava applications
Testing and Debugging
RxJava on Android
Using RxJava for Kotlin
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Appendix A: Introducing Lambda Expressions
Appendix B: Functional Types
Appendix C: Mixing Object-Oriented and Reactive Programming
Appendix D: Materializing and Dematerializing
Appendix E: Understanding Schedulers
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