Building Your First AI Agent with LangGraph
Building Your First AI Agent with LangGraph In July 2025, SaaStr founder Jason Lemkin was testing Replit's AI coding agent in public. He told it, in writing, no…
Englishdev.to Programming
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Code animation tool: five ways to animate code on screen for a video or a Short
Making code move on screen splits into five different jobs, and most tools do only one of them. Here is a map of the options, what each exports, what I could ve…
Englishdev.to Programming
Cómo auditar un conversor de MP3 a texto sin confundir una demo con una prueba
Una transcripción puede parecer excelente durante los primeros treinta segundos y fallar justo donde importa: un apellido, una cifra, una fecha o el cambio de h…
Englishdev.to Programming
Building Better Social Media Content with AI: Exploring ViralMeme.ai
Memes are more than just funny pictures on the internet. They have become an important part of online communication, social media marketing, and digital content…
Englishdev.to Programming
I Expected a 100x JSON Slowdown. I Got 1.9x.
I had a little serialize helper that sailed through code review. It looked like this: return JsonSerializer.Serialize(order, new JsonSerializerOptions { ... }) …
Englishdev.to Programming
Why FreePi runs on the Pi harness (and what the new Harness Leaderboard shows)
The model gets all the attention. The harness around it — prompts, tools, context management, when to stop — usually decides whether a coding agent actually shi…
Englishdev.to Programming
When an AI Agent Says 'Done,' What Exactly Has Finished?
"Done." It's probably the most satisfying word in a coding-agent session. It can also conceal three very different questions: Was the work permitted? Did the wo…
Englishdev.to Programming
Oracle vs PostgreSQL: Schema-Level Privileges and Access to Future Tables
Managing privileges across multiple database objects can become challenging, especially when users need access to all tables within a particular schema . For ex…
Englishdev.to Programming
How Kafka Works: A Quick Walkthrough with Java
Your order service needs to tell the invoice service, the email service, and the analytics pipeline that an order happened. You could wire them together directl…
Englishdev.to Java
How I Choose Which Open Source Issue to Work On (After Picking Wrong Ones)
In my last post I wrote about a PR I closed on purpose, because the maintainers were already fixing the same bug. That was a lesson in picking issues better. Ov…
Englishdev.to Java
What a tiny Django ticket taught me about open source
Hi, I'm Stephen, a Djangonaut contributing to Django core. This was my second ticket, and it looked tiny: a one-line capitalization bug in makemessages . It tur…
Englishdev.to Git
Git & GitHub Workflows: Branches, Pull Requests, and Code Review
Sooner or later, every programmer has the same awful moment. You change something, it breaks, and you can't remember what the code looked like before. Or you wo…
Englishdev.to Git
Personality Test Examples as Data: 5 Item Formats, Their JSON, and the Scoring Code
Personality test examples usually mean sample questions: strings you skim to get a feel for a test. For the developer who has to store the answers and compute a…
Englishdev.to TypeScript
How to Instrument Realtime IoT Room Discovery for Reconnect Evidence — Signal-First Build
Short answer: model room discovery as a replayable evidence stream, then measure discovered , watermark , and replayed separately. A control panel can reconnect…
Englishdev.to TypeScript
NestJS 12.2: Why validationError.target Is Now undefined
A NestJS app upgrades from @nestjs/core 12.1 to 12.2 — npm i @nestjs/core@latest @nestjs/common@latest , nothing else touched. The test suite stays green. In pr…
Englishdev.to TypeScript
Decoding Morse Code with a Finite-State Machine in TypeScript
Decoding Morse Code with a Finite-State Machine in TypeScript Morse code is a stream problem. Signals arrive one at a time — a short beep, a long beep, a pause …
Englishdev.to TypeScript
How to Test Better-Auth 2FA OTP in Playwright in Under 150ms (Zero IMAP Polling)
If you're building modern full-stack TypeScript applications in 2026, there's a strong chance you've adopted Better-Auth . It has rapidly become the community f…
Englishdev.to TypeScript
Lullwood: The Carry-Home Win Condition We Built, Then Cut From Our Browser Horror Game
Lullwood, our free browser horror game, used to make you carry the lost child home after you found her. We took that leg out. Today you reach her, press E, and …
Englishdev.to JavaScript
A practical checklist before you pick a free browser mog battle / Omegle alternative
Is there a free browser mog battle game after Omegle shut down? Yes: Omoggle Game is a free browser 1v1 mog battle for people who want a structured camera face-…
Englishdev.to JavaScript
Turn a CSV Into a Bar, Line or Scatter Chart in Your Browser (SVG or PNG Export)
I work on OnePassApps, and we build the browser studios and the apps behind them. This one is the Chart Maker: paste a CSV, get a bar, line or scatter chart, an…
Englishdev.to JavaScript