DEV Community • 2026-08-02 07:50

React Mastery Series – Day 17: Advanced State Management – Mastering useReducer

Welcome back to the React Mastery Series! In the previous article, we explored the Context API and learned how to eliminate prop drilling by sharing data across multiple components. However, as applications become more complex, managing state using multiple useState() Hooks can quickly become difficult. Imagine building: An online banking dashboard A shopping cart A task management applicatio...

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Hacker News: Front Page • 2026-08-02 07:47

Mathematics Without Mathematicians

Article URL: https://borretti.me/article/mathematics-without-mathematicians Comments URL: https://news.ycombinator.com/item?id=49142083 Points: 9 # Comments: 1

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Product Hunt — The best new products, every day • 2026-08-02 07:44

Snapdown

Turn anything on your Mac screen into clean Markdown Discussion | Link

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DEV Community • 2026-08-02 07:43

'Deploy succeeded.' Four of my nine pages were still 404.

I deployed nine new pages this week. The CLI said what it always says: ✨ Success! Uploaded 14 files Deployed (5.61 sec) Twenty seconds later I checked the actual URLs, because someone in a thread here had spent six rounds teaching me not to trust a report about the wrong thing: synology-htaccess-does-nothing 404 php-74-str-starts-with-fatal-error 200 pwa-still-showing-old-ve...

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DEV Community • 2026-08-02 07:42

6 Questions Every Enterprise Has to Answer About AI

You've probably sat in this meeting. Someone asks, "so where are we with AI, actually?" — and six people give six different answers. Last year, the questions were "should we do this?" and "how do we prove ROI?" This year, those questions have mostly disappeared. What replaced them are harder, more foundational questions. If nobody at your company is asking them yet, that's the thing to worry ab...

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DEV Community • 2026-08-02 07:42

Turning TravelAI.Core Into a Real Production System

A few months ago I published TravelAI.Core, a .NET library for searching travel destinations using AI. Version 2.0.0 shipped with support for OpenAI, Anthropic, Azure OpenAI, and Ollama. It works. People are using it. But it's still just a library. One package, doing one job, called directly from your code. That's not how production systems work. So I'm upgrading it. What TravelAI.Core...

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I'm Not a Developer — So Why Did Oracle Backend with Firebase APIs Get Me Hooked on Oracle AI Database?
DEV Community • 2026-08-02 07:41

I'm Not a Developer — So Why Did Oracle Backend with Firebase APIs Get Me Hooked on Oracle AI Database?

{ Abhilash Kumar Bhattaram : Follow on LinkedIn } I spend my days on the infrastructure side of things — migrations, capacity planning, licensing conversations, moving workloads onto Oracle Autonomous AI Database and OCI. I don't write mobile apps. I've never shipped an Android build or wrestled with an Xcode provisioning profile. So when I first heard about Oracle Backend with Fir...

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Hacker News • 2026-08-02 07:31

Show HN: Tone Generator

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DEV Community • 2026-08-02 07:30

CancellationException is not an assassin

I cancelled a coroutine. It kept running for 8 more seconds. It just did not care. This was a search screen. You type, it fires a network request. Type again, it cancels the old request and fires a new one. Standard stuff. Except the old request kept running, and every so often it finished last and painted stale results right over the fresh ones. I had called cancel. I had watched it run in the d...

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Hacker News: Front Page • 2026-08-02 07:25

Police in the US are making their own true crime podcasts

Article URL: https://www.bbc.com/news/articles/cpw9q0ekd9eo Comments URL: https://news.ycombinator.com/item?id=49141967 Points: 6 # Comments: 1

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DEV Community • 2026-08-02 07:19

CityLibrary

Django and React.js library management system 🚀 Dev.to Article Summary CityLibrary is a full-stack library management system built with React 19, Django 5, and Django REST Framework. It features a type-safe, responsive frontend powered by TanStack Router, TanStack Query, and TanStack Store, along with a Django Unfold administrative dashboard. Authentication is secured using native ...

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Hacker News: Front Page • 2026-08-02 07:17

IBM i (OS/400) the Database Operating System

Article URL: https://osadmins.com/en/ibm-i-os-400-the-database-operating-system/ Comments URL: https://news.ycombinator.com/item?id=49141937 Points: 4 # Comments: 0

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CSS Alignment Fix [closed]
Newest questions tagged css - Stack Overflow • 2026-08-02 07:16

CSS Alignment Fix [closed]

How do I align my elements to be aligned how I want it in the photo? I have attached my current CSS and a photo of my page right now as well as a photo of what I want it to look like. Could someone help me align my sliders? @font-face { font-family: JetBrainsMono; src: url(fonts/JetBrainsMono-Regular.ttf); } header { margin-top: -0.65%; margin-left: -0.65%; height: 7%; w...

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DEV Community • 2026-08-02 07:14

The Factory Class I Finally Deleted

The PR added a WhatsApp notification channel. Three changes: a new WhatsAppSender class, fair. Its registration, fair. And NotificationSenderFactory, where a switch statement quietly grew its fourth arm. I've been approving some version of that third change since 2016 — different codebases, same class, same switch. Keyed services made it deletable back in .NET 8, and this week, on .NET 10, I final...

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DEV Community • 2026-08-02 07:10

Stop Watching Others Code and Start Building Your Own Ideas

The uncomfortable truth about learning to code I want you to answer this question honestly. Your answer will decide the value of this article for you. It might be the thing that pulls you out of this trap and helps you get 10x more productive. Has it ever happened to you that you watched a 6-hour-long tutorial, and when you try to build something on your own, you're blank? I mean, how is this e...

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Hacker News: Front Page • 2026-08-02 07:09

I don't recommend Tailwind CSS

Article URL: https://en.andros.dev/blog/af3ee191/why-i-dont-recommend-tailwind-css/ Comments URL: https://news.ycombinator.com/item?id=49141891 Points: 7 # Comments: 0

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Hacker News: Front Page • 2026-08-02 07:06

Australia's social media ban has failed

Article URL: https://www.reuters.com/legal/litigation/australia-defends-teen-social-media-ban-after-study-shows-most-still-online-2026-08-01/ Comments URL: https://news.ycombinator.com/item?id=49141877 Points: 11 # Comments: 5

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DEV Community • 2026-08-02 07:06

Taming a 40-Minute Lean CI: Three Rounds, Three Wrong Suspects

Our Lean 4 + mathlib project used to spend 41 minutes in CI on every single PR. Today, the worst case — rebuilding the heaviest files from scratch — takes 12 minutes, and an ordinary PR finishes in a few minutes on an incremental build. What we fixed Before After Kernel axiom audit 7m 11s 11s An ordinary PR 41m (full rebuild, always) a few minutes (incremental) Worst case (heaviest fil...

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DEV Community • 2026-08-02 07:06

Everyone Knows It Scores Half. Nobody Checks Which Half.

Builder Journal · Mars Environmental Dynamics Analyzer (MEDA) Virtual Sensor Recovery Every Kaggle competition page carries the same line of small print under the standings. This leaderboard is calculated with approximately 50% of the test data. The final results will be based on the other 50%. Everybody reads it. Everybody nods. Almost nobody asks which 50%. I asked, and then I measured it, and...

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DEV Community • 2026-08-02 07:05

Hire a Shopify developer: what to ask before you sign anything

Hiring a Shopify developer is not a single decision — it's at least three decisions disguised as one. Do you need a developer at all, or will a well-configured theme and a few apps get you there? If you do need a developer, are you building on liquid or going headless? And is the person you're talking to actually qualified for the version of Shopify you're running? Getting those three questions wr...

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