ExampleApp

Notes

Pipes:

• tap

• flatMap

• catchError

• async

  • The async pipe automatically subscribes and unsubscribes for us

Higher-Order Mapping Operators

• switchMap

  • Stops the current operation and performs the new operation

• concatMap

  • Performs each operation one at a time, in order

• mergeMap

  • Performs each operation concurrently

Notation

variable$ Dollar Sign at the end indicates that is an observable and not the actual data

products$ = this.http.get<Product[]>(url)

RxJs Patterns in Angular

• Declarative Data Access Pattern
• Subject / BehaviorSubject
• Retrieve on Action Pattern

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About this app

This project was generated with Angular CLI version 12.0.4.

To update to the lates angular cli version:

npm uninstall -g @angular/cli
npm install -g @angular/cli@latest

Development server

Run ng serve for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.

Code scaffolding

Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.

Build

Run ng build to build the project. The build artifacts will be stored in the dist/ directory.

Running unit tests

Run ng test to execute the unit tests via Karma.

Running end-to-end tests

Run ng e2e to execute the end-to-end tests via a platform of your choice. To use this command, you need to first add a package that implements end-to-end testing capabilities.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI Overview and Command Reference page.