Gain insights into reactive programming with RxJS. Learn about observables, operators, and concurrent programming to create real-world applications like a real-time earthquake visualizer and spaceship game.

_ Reactive Programming with RxJS by The Pragmatic Programmer_ .png

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test rx

rx live

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rx live-earth

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test rx-copy

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rx-cycle

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cycle-rx-copy

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In this course, you will learn about reactive programming techniques and use them to create real-world applications. Throughout this course, you will learn important concepts of RxJS programming such as observables, operators, concurrent programming, and how to build a complete web application.

Additionally, you will have the opportunity to build out applications for different real-world scenarios so that you can put what you learn into practice. You will use RxJS operators in scenarios such as the real-time earthquake visualizer and the reactive spaceship game.

By the end, you will have a new skill that you can utilize to build reactive programs as well as a few new projects to add to your portfolio.

Reactive Programming with RxJS

For a software developer, it’s hard to hear about Observables and not think of the venerable Observer pattern. In it, we have an object called ***Producer*** that keeps an internal list of Listeners subscribed to it. ***Listeners*** are notified, by calling their `update` method, whenever the state of the Producer changes. In most explanations of the Observer pattern, this entity is called ***Subject***, but to avoid confusion with RxJS’s own *Subject* type, we call it Producer.

It’s easy to implement a rudimentary version of the pattern in a few lines:

Learn the methods and implementation of the Observer Pattern.

Observer Pattern

Getting Started

Introduction to Reactive Programming with RxJS

Understanding the Reactiveness

Understanding the Observables

Understanding Sequencing and its Operators

Make a Real-time Earthquake Visualizer

Building Concurrent Programs Through Pipelines

RxJS Subject Class

Building a Reactive Spaceship to Keep the Application Pure

Building a Complete Web Application Using RxJS

Getting Real Time Updates from Twitter using Node.js

Schedulers

React Web Applications With Cycle.js and using Model View Intent

Closing Remarks

Observer Pattern