Signals vs. ngOnChanges for better Angular state management

Angular is undergoing significant changes, often referred to as the Angular Renaissance, with the introduction and development of features like signals and control flow programming, enhancing state management and overall framework functionality. Signals, now available in developer preview, simplify Angular's approach to data binding and change detection compared to the traditional ngOnChanges method, which involves manually tracking and comparing old and new data values. Through a sample app tracking product prices, the text demonstrates how signals can streamline updating components and improve type safety, paving the way for a more efficient and intuitive coding experience in Angular. The use of signals allows developers to store data changes effectively and perform necessary comparisons using computed functions, ultimately leading to cleaner, type-safe code and addressing potential future issues with change detection as Angular moves away from using zones. This evolution in Angular is part of a broader trend towards improving performance and developer experience by reducing the complexity associated with managing data state changes.