Narendra Yogi’s Post

FlatList works. Until your app scales. Once you deal with large datasets, you’ll start noticing: • Frame drops • Laggy scrolling • Increased memory usage That’s where FlashList comes in. Built by Shopify, FlashList is designed for high-performance lists in React Native. It uses better recycling and rendering strategies, making scrolling significantly smoother. In real-world apps, the difference is noticeable. If your app handles large lists, switching to FlashList is one of the easiest performance wins. Same API. Better performance. #ReactNative #FlashList #MobileDevelopment #Performance #JavaScript

Your Nuxt app is slower than you think. Here's my exact optimization checklist that took a app from 3.2s → 780ms load time 👇 Which tip will you implement first? #NuxtJS #VueJS #WebPerformance #FrontendDevelopment #TypeScript #WebDevelopment

Have you ever had your mobile app crash randomly just because you hit the "Back" button a little too fast while something was loading? 😅 One of the most common production crashes in Flutter apps is completely avoidable: The Async Gap Crash. Early on, it’s easy to think of BuildContext as just a variable you have to pass around to make things like themes, navigation, and snackbars work. But BuildContext is actually the widget's location in the Element tree. Here is the exact scenario that crashes apps in production: - A user taps "Submit." - The app makes an asynchronous call to your backend API. - Network latency hits. The user gets impatient and taps the "Back" button, destroying the current screen. - The API finally returns a 200 OK. - Your Flutter code tries to use BuildContext to show a "Success" snackbar. Fatal Crash. The context no longer exists. THE FIX: Whenever you cross an async gap (like a network request or a database read), you must verify the widget is still in the tree before using the context again. A simple if (!context.mounted) return; completely neutralizes this ticking time bomb. Engineering isn't just about writing code that works perfectly when the network is fast. It is about writing code that survives unpredictable user behavior when the network is slow. How do you handle async state in your mobile applications? #Flutter #MobileAppDevelopment #SoftwareEngineering #TechLeadership #CleanCode #DartLang

Imagine a user opens your app, hits an error, and just closes it. No report, no DM, nothing. You're sitting there thinking everything is fine. I added error monitoring to my book review app. Sentry on both the React frontend and Node/Express backend. The setup was maybe 15 minutes total. Now the moment something breaks in production, I get notified. I also added source maps on the frontend side, so when an error comes in, I'm looking at my actual TypeScript instead of minified code I can barely read. (yes, those are test errors in the screenshot — the setup is ready for when real ones show up) Most developers don't find out something is broken until a user complains. And users rarely complain, they just stop using your app. Error monitoring is how you stay ahead of that. #buildinpublic #backend #nodejs #react #softwaredeveloper

𝗥𝗲𝗮𝗰𝘁 𝗖𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁-𝗕𝗮𝘀𝗲𝗱 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 React uses components. Components are small pieces of your UI. Examples include a button or a navbar. Each piece has its own logic and style. This approach helps you: - Reuse your code. - Scale your app. - Maintain your project. You update one part. You do not break the whole app. React uses a virtual DOM. It updates only the parts you change. This makes your app fast. Source: https://lnkd.in/g8ryt35d Optional learning community: https://t.me/GyaanSetuAi

Day 7 — Today I turned a single-page thing into an actual app with navigation. React Router. Sounds simple. Has more depth than I expected. Built a 3-page mini app — Home, About, and a Dashboard. Added a protected route that redirects to login if you're not authenticated. Felt very "real project" energy. useParams is one of those things you don't appreciate until you need dynamic URLs. Once you do, you can't imagine building without it. Nested routes took me a bit to wrap my head around. But once I understood the Outlet component, it all made sense — it's like a placeholder for child routes. One week in and I can already build something that looks like a real web app. Wild. What's your favourite thing about React Router? #reactjs #reactrouter #webdevelopment #frontenddeveloper

In Next.js App Router, what is the purpose of the loading.tsx file placed inside a route folder (e.g., app/dashboard/loading.tsx), and how does it work? loading.tsx is just Next.js automatically wrapping your page in a <Suspense> boundary with your loading UI as the fallback. So when you create loading.tsx, Next.js does this for you automatically: <Suspense fallback={<Loading />}> // ← your loading.tsx <Page /> // ← your page.tsx </Suspense> You don't have to write the Suspense wrapper yourself — Next.js handles it. 😎 #nextjs

Why do no-code mobile app builders still exist? Seriously. Someone explain it to me. You can now build a full mobile app from scratch with Claude Code. 𝗭𝗲𝗿𝗼 Flutter knowledge. Zero Dart. Zero code written by hand. Just describe what you want: 🛠️ App gets built 🐛 Bugs get fixed on command 📦 Build gets compiled 🚀 Deployment to App Store and Google Play — guided step by step The whole thing. Start to finish. No-code builders used to make sense. You couldn't hire a dev. You couldn't learn a framework in a weekend. So you accepted the drag-and-drop prison — with its limits, its vendor lock-in, its templates that all look the same. That tradeoff made sense. Then. Now you can build the 𝗿𝗲𝗮𝗹 thing — a proper, production-ready mobile app — without touching a single line of code yourself. No template constraints. No platform limits. No monthly fee to a builder that owns your product. The only thing standing between an idea and a shipped app is no longer technical skill. It's clarity. Knowing what you want to build. So what exactly are these app builders solving for now? #AINativeFounder #MobileApp #ClaudeAI #BuildInPublic #NoCode

If you're building an Angular app, one common problem is this: As your app grows, it becomes slower to load ⏳ Why? Because everything is loaded at once when the app starts. 💡 This is where Lazy Loading helps. 👉 Instead of loading the whole app at once, Angular loads parts of your app only when they are needed. 📌 Simple Example: When a user clicks on the "Admin" page, only then that part of the app will load. { path: 'admin', loadComponent: () => import('./admin/admin.component') .then(m => m.AdminComponent) } What you get: - Faster app start - Better performance - Smooth user experience In simple words: "Load only what you need, when you need it." #Angular #Frontend #WebDevelopment #JavaScript #Coding

As a beginner which projects u should choose to start. For Frontend: • Lexicon App • Pic Editor App • Currency Converter For Backend: • Authentication • To Do List • Blogging App