Learn how to write unit tests for routes and controllers in an Express.js application using Jest, and debug your application using built-in tools. This hands-on guide covers the basics of testing and debugging, and provides a step-by-step approach to writing unit tests and debugging your application.

Master the fundamentals of Node.js and its event-driven architecture to build scalable web applications. Learn how Node.js provides an efficient, non-blocking I/O model and explore key concepts such as event registration, triggering, and listener execution for real-time web development. Discover the benefits of Node.js event-driven architecture for creating high-performance and scalable web applications.

Explore the basics of state management in SwiftUI, including State, Binding, and ObservedObject properties, and learn how to use these concepts to create dynamic and responsive user interfaces that update in response to changes in your app's data. Mastering these concepts is key to building complex and interactive UI components in SwiftUI.