Reactive Programming in Flutter: Understanding the Power of Observables and Computed Values with Signals, Riverpod and RxDart
Key Takeaways: You don’t always need Rx libraries - basic Flutter widgets often suffice. Signals automatically tracks dependencies and minimizes recomputes. Riverpod requires manual watch calls. RxDart extends Dart streams with ReactiveX operators. Choose the simplest solution for each use case. This article introduces you to reactive programming and flutter signals state management, and talks about how a few popular libraries implement it. It talks about the role of “caching” or storing computed values and introduces a new library called Signals that deals with a fundamental Rx problem that other libraries don’t fully cover. This library is a port from the Preact.js framework. Reactive Programming Reactive programming is a paradigm centered around reacting to changes in data over time. It facilitates propagating updates automatically. This ensures UI and data remain in sync. In Flutter terms, this means triggering rebuilds automatically...
Christian Findlay
Nov 30, 2023
