Observables are a fundamental concept in reactive programming, particularly within the RxJS library used in Angular applications. An Observable is essentially a data stream that can emit multiple values over time, unlike Promises which can only return a single value. Observables are lazy, meaning they only start emitting data when a subscriber begins listening, and they can be canceled, which is a significant advantage in managing resources in asynchronous programming.
In the context of Angular, Observables are crucial for handling asynchronous operations such as HTTP requests, where data might be fetched and updated dynamically. Observables support a variety of operators like map, filter, merge, and more, which allow developers to perform complex transformations and combinations of data streams effectively[1][2][3][5].
The use of Observables in Angular is widespread, especially with t...
