9th of 11 Questions.
Observable Pattern
The Observable pattern represents a stream of data or events that can be observed over time, allowing multiple subscribers to react to emitted values asynchronously.
The Observable pattern extends the Observer pattern by introducing operators, lazy evaluation, and powerful composition capabilities. It treats data as streams that can be transformed, filtered, combined, and observed. RxJS is the most prominent implementation, and it's deeply integrated into Angular. This pattern is ideal for handling asynchronous events, real-time data, user inputs, HTTP requests, and complex state management.
Vanilla JavaScript Implementation (simple observable)
React Implementation
Angular Implementation