EP 7.3 - Angular / Reactive Programming with RxJS / Observables & RxJS
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Observables are a blueprint for creating streams and plumbing them together with operators to create observable chains.
RxJS is a library that lets us create and work with observables.
We can subscribe to an observable chain and get a callback every time something is pushed onto the last stream.
By default observables are cold and only become hot when they get their first subscriber.
Learning RxJS involves understanding all the operators that are available and how to use them together.
We use marble diagrams to help explain how an operator works.
In this lecture, we used RxJS in isolation, in the next lecture we will look at how to use RxJS in Angular.