React - Every Beginner React Developer Makes This Mistake With State

FREE React Hooks Course: https://courses.webdevsimplified.com/react-hooks-simplified By far one of the biggest beginner React mistakes I see is developers storing derived state. This is a huge problem that is incredibly hard to detect unless you know what you are looking for. In this video I will show you what the signs are of derived state so you can make sure you never store derived state. 📚 Materials/References: FREE React Hooks Course: https://courses.webdevsimplified.com/react-hooks-simplified Derived State Blog Article: https://blog.webdevsimplified.com/2019-11/never-store-derived-state 🌎 Find Me Here: My Blog: https://blog.webdevsimplified.com My Courses: https://courses.webdevsimplified.com Patreon: https://www.patreon.com/WebDevSimplified Twitter: https://twitter.com/DevSimplified Discord: https://discord.gg/7StTjnR GitHub: https://github.com/WebDevSimplified CodePen: https://codepen.io/WebDevSimplified ⏱️ Timestamps: 00:00 - Introduction 00:48 - Derived state problem 02:45 - How to fix the problem 04:26 - Performance considerations #React #WDS #useState