Arc Prize Foundation (YC W26) Is Hiring a Platform Engineer for ARC-AGI-4
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・The choice of state management can have a dramatic effect on React performance, but most comparisons focus on developer experience rather than runtime characteristics.Having implemented Context, Redux, Zustand and Jotai in production apps, the following factors were found to be important: re-render frequency, serialisation overhead and selector performance. Each solution balances these factors differently.ToolMy ImpressionTrade-offGood Use CaseContext APISimple but limited at scaleRe-renders ca
Your package.json only shows 20 dependencies. Your lock file has 487. I built a scanner for the other 467.By Pico · April 2026When you run npm audit, it checks your direct dependencies against a CVE database. When the axios attack happened on April 1st, npm audit showed zero issues. The attack vector was already there — a sole maintainer with 100M weekly downloads — but there was no CVE yet to match against.I built a tool that scores packages on behavioral signals instead of CVE databases.
Building an Unshielded Token dApp with UI on MidnightMidnight is best known for its privacy features, but not everything needs to be shielded. Unshielded tokens are perfect when you want on-chain verifiability without hiding transfer amounts—think public governance tokens, loyalty points, or demo applications. In this tutorial, we'll build a complete unshielded token dApp: a Compact smart contract, TypeScript integration, and a React frontend with wallet connection, mint, transfer, and bal
Choosing the right application architecture is one of the most critical decisions you'll make when building a .NET application. The architecture you choose will impact everything from development speed to long-term maintainability.In this comprehensive guide, we'll explore the most popular .NET application architecture patterns, their pros and cons, and when to use each one. IntroductionWith .NET 10, developers have more options than ever for structuring their applications. Whether you're b
I run 14 credit cards simultaneously.Not because I'm reckless — because I understand how to use 0% APR introductory periods as free short-term financing. Done right, it's a legitimate way to smooth cash flow, fund purchases, or carry a balance for 12-21 months without paying a cent in interest.Done wrong — miss one deadline — and you're looking at retroactive interest charges that can wipe out months of careful management.This is the problem I set out to solve with code. The Core Problem: D
Why Your Landing Page is Leaking Money: A Technical Deep DiveLanding pages are the digital storefronts of your business. Yet, many developers and businesses unknowingly hemorrhage revenue through poor design, inefficient code, and suboptimal user experiences. In this technical deep dive, we'll explore why your landing page might be leaking money and how to fix it. We'll cover performance bottlenecks, JavaScript anti-patterns, and CSS bloat, with actionable code snippets to level up your im
Most image compression tools upload your photos to a server, process them, and send back the result. But you can do the same thing entirely in the browser with the Canvas API — zero server, zero upload, zero privacy concerns.Here's how. The Core: Canvas + toBlob()async function compressImage(file, quality = 0.8, format = 'image/webp') { return new Promise((resolve) => { const img = new Image(); const canvas = document.createElement('canvas'); const ctx = canvas.getContext('2d')
At some point, every Node.js team faces that debate: "Should we finally bite the bullet and migrate to TypeScript?" The promise of type safety is seductive—catching bugs at compile time instead of in production. And honestly, who doesn't want cleaner, more maintainable code? But here's the thing: our big TypeScript migration did NOT go as smoothly as we hoped. In fact, it introduced a few production bugs that we never saw coming.If you're considering a TypeScript rewrite, learn from where we stu
1. User Profile UpdateYou have:const user = {name:"vijay",age:25,email:"[email protected]"};Update email and a new property isActive = true.PROGRAM:const user = {name:"vijay", age: 25, email: "[email protected]" } user.email = "[email protected]" user.isActive = true console.log(user)OUTPUT:{ name: 'vijay', age: 25, email: '[email protected]', isActive: true}2. Shopping Cart TotalYou have:const cart = [ {name: "shirt",price : 500}, {name: "shoes",price : 1500}, {name :"cap", p
In the world of software development, we are often told that Clean Architecture and SOLID principles are "over-engineering" for small projects. This week, I proved that theory wrong in the most practical way possible: I fired my ORM. The GoalI was building a Minimalist Feedback API. The plan was simple: use Prisma 6 with SQLite to persist data. I had already built my Core Domain (Entities) and Business Logic (Use Cases), keeping them isolated from external frameworks. The Problem: When
A practical architecture pattern for systems where one user can own, join, and operate multiple organizations. Table of ContentsThe Problem With Most Multi-Tenant TutorialsThe Shift: Model Organizations, Not Just Data BucketsThe Core ModelWhy Ownership and Team Access Should Be SeparateSupport One User Across Many OrganizationsMake Organization Context Explicit Per RequestScope Permissions to the OrganizationTreat Team Management as Part of the Core ArchitectureWhat This Model Buys YouWhat
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Fict Repo: https://github.com/fictjs/fictA source-accurate walkthrough of the compiler pipeline currently implemented in this repository. What This Article Is and Is NotThis article describes the implementation under packages/compiler/src as it exists today. It is not a cleaned-up idealized pipeline, and it intentionally distinguishes:top-level stages that always runanalysis helpers that only run on some pathsrepresentative IR snippets versus current emitted outputUnless otherwise noted, ex
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IntroductionReact is a popular JavaScript library used for building user interfaces, especially for single-page applications (SPAs). It was developed and maintained by Meta (formerly Facebook) and has become one of the most widely used tools among developers.When building web applications, you’ll often hear two terms: MPA (Multi-Page Application) and SPA (Single-Page Application). They represent different ways a website loads and updates content.What is an MPA (Multi-Page Application)?An
Most React tutorials focus on building apps. Very few teach you how to fix performance issues which is exactly what companies care about.In this article, I’ll walk through how I optimized a React app that was lagging badly and reduced load time significantly.🐢 The ProblemThe app had:Slow initial loadUnnecessary re-rendersLarge bundle sizePoor user experience on low-end devices✅ Step 1: Identifying the BottleneckBefore optimizing, I used:React DevTools ProfilerChrome Performance tabI discovered:C
Open the React DevTools "highlight updates" panel on any React app you've ever worked on. Count the flashes. You've done this before, probably in an interview, probably while defending a useCallback. That counting habit is a React-specific anxiety, not a universal one — and the reason matters less for this post than what I did about it.I spent about a month building a thin wrapper around an existing state library (Legend-State) that tries to compile that anxiety away. The piece I want to write a
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C# 14 is here, and it's packed with features that will make your code cleaner, more expressive, and more performant. Whether you're a seasoned .NET developer or just getting started, this complete guide covers every new feature in C# 14. IntroductionC# 14 ships with .NET 10, and it's one of the most significant releases in recent years. From extension members that completely change how we extend types, to practical quality-of-life improvements that eliminate boilerplate code, C# 14 has some
