- Validators should be pure functions. #spaced
- Change detection in Angular
- Initial null problem in
AsyncPipe- https://github.com/angular/angular/issues/43727.Angular Forms
- Angular Custom Form Controls: Complete Guide - Angular University
- Custom form controls in Angular
Debugging
RxJS
- When to unsubscribe
- The
catchErroroperator returns a newObservablestream (acts as aswitchMap). #spaced - Higher-order observablesHigher-order observables
Higher-order Observables = observables of observables.
Operators to handle higher-order observables:
mergeMap (previously flatMap)
Creates new observable immediately.
Outer and...