Поведенческие паттерны на Swift - Наблюдатель (Observer)

In this lesson, we continue exploring behavioral patterns in Swift, and next up is Observer—a popular pattern that underlies NSNotificationCenter and allows various objects to observe the properties of an observable object, called a subject. Telegram chat link: https://t.me/+SBRqlvcbDWQ0ZGNi PS: Hello everyone! My name is Vlad Madi, and you're on the educational channel of the MADI.SPACE digital studio. Here we learn iOS app development using Swift. On our channel, you can learn Swift and iOS development using playlists. This playlist covers iOS development using Apple's SwiftUI framework. Google Firebase Firestore, Auth, and Storage are used as the database and backend service.