RxJS for Architects

1. Open this project in your browser

2. Find out, how the examples works. For this, have a look to the component and facade service in the folder flight-lookahead.

3. Try to answer the following questions regarding the facade:

   • Why are the subjects private and the observables readonly?
   • What does the method asObservable do?
   • Why does online$ use shareReplay at the end?
   • What does the parameters passed to sharedReplay mean?
   • What does combineLatest do?
   • Why does flights$ use switchMap?
   • How is error handling done?
   • Why is error handling important here?

4. Try to answer the following questions regarding the component:

   • What does debounceTime do for the Observable input$?
   • How does this component unsubscribe from the Observables used (hint: there are two different answers!)