In the previous chapter, we went through the core concepts of Reactive extensions and learned about observables, observers, subscriptions, and operators in RxJS. Now we’re going to see how we can use Reactive Extensions with Angular.
Reactive Extensions weren’t around at the time of writing AngularJS, but promises were. AngularJS used a lot of promise objects, including by the $http, $interval, and $timeout modules. Promise objects
could be used to represent asynchronous results: success (return value) or failure (return error). Promise objects were used in HTTP communication with the server and ...
