README.md

Module 07 - Reactive Services,

Projects:

fun-with-rx-services	Introduction to reactive development in angular

RxJS in Angular Services

• We learned how to develop stateful services using BehaviorSubject and expose it as an observable using the .asObservable() method
• We understood that if we subscribe to an observable we must also unsubscribe from it when we are done with it to avoid memory leaks
• We saw that we can bind directly to an observable using the async pipe in the html
• We learned the term Fully Reactive Application as one where we pass observables all the way from the services to the html templates
• We saw how to configure manual change detection for components and understood that it can dramatically improve performance
• We saw how to inject the ChangeDetectorRef and to manually activate detectChanges to force invalidation of the DOM

Introduction to RxJS operators

• We talked about the concept of operators in math, strings and arrays
• We understood that RxJS operators create observables.
• We saw 4 documentation web sites that serve as reference guide for reactive operators
  • ReactiveX docs
  • RxJS docs
  • Rx Marbles
  • Rx Marble Visualizer
• We covered some simple operators
  • map
  • from
  • filter
  • take
• We created an example that uses observable to convert color search keyword into a list of matching results (colors)
• We used the map operator to convert user input to results

Combinators

• We saw some combinators we can use to combine several observables together into one
  • combineLatest