DevIdiot!

React useEffect Dependency Array Complete Guide

React useEffect dependency array kya hai aur ise sahi tarike se kaise use karein? Is complete Hindi guide me best practices aur examples seekhein.Doston, jab hum ReactJS me kaam karte hain, toh useEffect hook humara sabse bada saathi hota hai. Lekin aksar naye developers yahan galti kar dete hain—kabhi infinite loop me phas jaate hain, toh kabhi data update nahi hota. Aaj hum useEffect dependency array ke concept ko aise samjhenge ki aapko dobara isme kabhi koi error nahi aayega.⚡ Quick Answer:

Building a Production-Grade Pizza Delivery App — My OIBSIP Level 3 Experience

"Not recommended for beginners."That's what the task sheet said about Level 3 of the Oasis Infobyte Web Development & Design internship. Naturally, that's the one I picked. The TaskLevel 3 has exactly one task — build a full-stack Pizza Delivery Application. Not a landing page, not a CRUD demo. A real platform: user authentication with email verification, a custom pizza builder, live payments, inventory management, an admin system, and real-time order tracking. The StackReact + Vit

Next.js App Router Caching: revalidate, dynamic, and no-store Without the Folklore

Next.js App Router Caching: revalidate, dynamic, and no-store Without the FolkloreThere's a very specific moment in App Router development that I know all too well: someone adds export const dynamic = 'force-dynamic' to a page, the build passes, and everyone breathes again. The data is fresh. The problem... is that nobody knows exactly why it works, or when it stops being the right answer.That's folklore. And folklore in caching is expensive — you pay for it either with stale data when you

What goes in global state in 2026

What belongs in Redux, URL state, server cache, and local state in modern React appsAs a senior developer I’ve seen many developers over-engineering the front-end system and putting too many things in Redux (or Zustand) but after years using Next.js, React Query, context providers and URL parameters, I have a clear vision on what goes and what does not go into global state, there is also a bit of server side rendering.This is still a problem in the front-end because we don’t see clearly the diff

CSS Grid vs Flexbox: The Matrix of Layouts

The Quest Begins (The "Why")I was building a dashboard the other day—cards that needed to sit side‑by‑side, a header that should stretch full width, and a sidebar that could collapse when the screen got narrow. I reached for Flexbox because, honestly, it’s the first tool I grab when I need to line things up. The header? Easy. The cards? I wrapped them in a flex container, set flex-wrap: wrap, and called it a day. But then the design changed. The cards needed to line up in a perfect grid,

React useEffect Cleanup Function Kaise Kaam Karta Hai

React useEffect cleanup function kaise kaam karta hai aur ise memory leaks rokne ke liye kaise sahi tarike se use karein? Is guide me step-by-step seekhein.Dosto, jab hum ReactJS me components ke saath kaam karte hain, toh aksar hume browser ke resources (jaise timers, subscriptions, ya event listeners) ko handle karna padta hai. Lekin kya kabhi socha hai ki jab component screen se hat jata hai, tab un resources ka kya hota hai? Yahi par 'cleanup function' ka asli jaadu shuru hota hai.⚡ Quick An

New Portfolio Project: Open-Sourcing a Type-Safe React + TypeScript Platform

I have successfully completed PrimeClean, a web project developed with React and TypeScript, and released it as an open-source repository on GitHub.The primary focus of this project was to construct a sustainable, clean code infrastructure aligned with modern web standards.Technical Highlights🏗️ React & TypeScript: Modular component structure ensuring high type-safety. 📱 Cross-Device Compatibility: A fully responsive interface powered by the Bootstrap 5 grid system. 🔍 Semantic Coding:

Scientist who cleaned space toilet on work now leading Mars exploration

<a href="https://news.ycombinator.com/item?id=48792780">Comments</a>

Your fetch() Is Still Running After the User Left

When you fire a fetch() and the component that triggered it unmounts, the request keeps going. The server still processes it. When the response arrives, it calls back into whatever JavaScript it finds — a stale closure, a dead state setter, a global store that has already moved on. React's "Can't perform a state update on an unmounted component" warning is the polite version of this. The silent version is worse: results from an old query overwriting the current UI.These aren't mysterious race co

Cyberpunk-Themed Homelab Transformation: Integrating Custom Software and Hardware for Functional Aesthetics

Introduction: The Vision of a Cyberpunk Netrunner Operations Control RoomTransforming a homelab into a Cyberpunk-themed Netrunner Operations Control room exemplifies the seamless integration of functional technology with immersive aesthetics. Over eight months, a standard server rack evolved into a workspace that merges the dystopian allure of cyberpunk culture with the precision of modern tools. Leveraging React/TypeScript, Node-RED, and Home Assistant, this project transcends mere themin

Claude Design System Prompt

<a href="https://news.ycombinator.com/item?id=48792399">Comments</a>

Knowledge Should Not Be Gated

<a href="https://news.ycombinator.com/item?id=48792195">Comments</a>

The Mall of React: An Uncle-Nephew Guide

One mall. Many shops. From the day everything had to be rearranged by hand, to the smart, modern mall you shop in today. Setting the Scene👦 Nephew: Uncle, I use React every day, but if someone asks me how it actually works inside, I go blank.👨‍🦳 Uncle: Then let's fix that with one picture in your head: a big shopping mall. Every React idea maps to something in this mall. Keep this table nearby.In the MallIn ReactThe mall buildingThe web page, the browserMall ManagementReact itselfThe floor

Fast Software, the Best Software (2019)

<a href="https://news.ycombinator.com/item?id=48792008">Comments</a>

I built a free image-to-pixel-art converter that runs 100% in the browser

I wanted to turn some photos into pixel art for a side project, and every online tool I found either watermarked the output, required signup, or uploaded my images to a server. So I built my own: https://imagetopixelart.topHow it works (no backend at all):Downsampling — draw the image onto a small canvas (drawImage with smoothing), where each cell becomes one "pixel". A slider controls block size from 2 to 64px.Color quantization — median-cut over the RGB space for the "Auto" palette, or nearest

I built a free, keyless API for generating WhatsApp links and QR codes

I run WhatsUsernames.link, a free WhatsApp link + QR code generator. This week I shipped everything the site does as a public REST API — and made three decisions I wish more small APIs made:No API key, no signup. Call the endpoint, get the response. No dashboard, no token, no confirmation email.Free, with per-IP rate limits generous enough for real use.CORS enabled on every endpoint — call it straight from the browser on a static site, no backend needed. The endpointsBase URL: https://whats

ReguGuide: How Our AI Agents Simplified Digital Ethics and Regulations

ReguGuide: How Our AI Agents Simplified Digital Ethics and Regulations\n\nIn a digital world where regulations and ethical standards are constantly evolving, it's becoming increasingly challenging for businesses to keep up. Generic terms and privacy policies are no longer sufficient. That's why, at Pixel Office, we decided to create ReguGuide: AI &amp; Digital Ethics Policy Generator – an interactive wizard that generates specialized policies beyond generic documents.\n\nThis devlog descri

SchemaFlow: How Our AI Agents Built a Structured Content Mockup Generator in Record Time

SchemaFlow: How Our AI Agents Built a Structured Content Mockup Generator in Record TimeIn the fast-paced world of product development, creating realistic mockups and prototypes often hits a snag: the lack of meaningful, structured content. Developers and designers spend valuable time manually crafting dummy data, or resort to generic "Lorem Ipsum," which fails to convey the true user experience. This challenge sparked the idea for SchemaFlow, a tool designed to revolutionize content gener

How Our AI Agents Built EmailCraft: A Cross-Client HTML Email Builder in Record Time

EmailCraft Responsive Builder: Taming the Cross-Client Email Beast with AIThe world of email development is notoriously challenging. Unlike modern web browsers that adhere to evolving standards, email clients often rely on archaic rendering engines, leading to a fragmented and frustrating experience for developers. Ensuring an HTML email looks perfect in Outlook, Gmail, Apple Mail, and various mobile clients feels like a constant battle against the past.At Pixel Office, we tasked our AI ag

Node.js Performance Tips: From 100 to 10,000 Requests Per Second

Most Node.js apps can handle more than you think. Here's how to squeeze out real performance gains. Quick Wins First 1. Enable Compressionimport compression from 'compression';app.use(compression());Gives you 2-3x throughput improvement instantly. 2. Use ClustersNode.js runs single-threaded. Use all CPU cores:import { cluster } from 'node:cluster';const numCPUs = os.cpus().length;if (cluster.isPrimary) { for (let i = 0; i &lt; numCPUs; i++) { cluster.fork(); }} else { app.li