RxJS Subjects and Multicasting Operators

Overview

Note: RxJS imports have changed since the publication of this course. The concepts being taught on RxJS are still applicable.
RxJS Subjects are a source of confusion for many people using RxJS. For many, the Subject is the obvious and only answer to every problem. Subjects are incredibly useful and necessary, but the key is to know when to use them for solving specific problems that you encounter.
In this course, we are going deep into RxJS Subjects and multicasting operators. You'll gain a solid understanding of when, where, and how to use these powerful tools.
If you are new to RxJS, or want a refresher please check out this course Introduction to Reactive Programming.

Syllabus

An Observable execution may only have one Observer
Subject: an Observable and Observer hybrid
Using a Subject as an Event Bus
BehaviorSubject: representing a value over time
ReplaySubject: remembering events from the past
AsyncSubject: representing a computation that yields a final value
Connection operator: multicast and connect
Stopping a shared observable execution
RefCount: automatically starting and stopping an execution
Multicasting shortcuts: publish() and variants
Reusable multicasting with Subject factories
Multicast with a selector argument, as a sandbox
Conclusion: when to use Subjects

Taught by

André Staltz

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