DEV Community • 2026-08-17 17:13

Writing Your First Java Code: 5 Questions I Had as a Beginner

Java Learning Notes — Telusko Core Java | Video 03 After installing the JDK and setting up VS Code, I finally reached the part I was waiting for: Writing my first Java code. At this point, I thought the process would be very simple: Open VS Code → write System.out.println() → run it. But while going through the lesson, I realized that there are a few things I need to understand before a...

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DEV Community • 2026-08-17 17:12

Shadow Traffic Is the Only Honest Free Model Evaluation

The demo replay played in the dim glow of a conference room, and everyone agreed the free model sounded good. The same four prompts produced crisp summaries, polite error handling, and no obvious hallucination, so the conversation drifted toward replacing our paid endpoint before lunch. I sat through it with an uncomfortable question that nobody asked: why were we trusting a handful of canned exam...

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Product Hunt — The best new products, every day • 2026-08-17 17:12

bitdrift.ai

The world’s first agentic mobile observability platform Discussion | Link

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Newest questions tagged javascript - Stack Overflow • 2026-08-17 17:12

Is playwright being used efficiently for test automation?

I’ve been exploring Playwright for test automation and one thing I’ve been thinking about is how efficiently teams are actually using it beyond simply automating test cases. Playwright provides features such as auto-waiting, web-first assertions, parallel execution, browser contexts, network interception, tracing, and built-in test isolation. But having access to these features doesn’t necessarily...

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Newest questions tagged javascript - Stack Overflow • 2026-08-17 17:12

How are Playwright features being used in test automation? [closed]

I’ve been exploring Playwright for test automation and one thing I’ve been thinking about is how efficiently teams are actually using it beyond simply automating test cases. Playwright provides features such as auto-waiting, web-first assertions, parallel execution, browser contexts, network interception, tracing, and built-in test isolation. But having access to these features doesn’t necessarily...

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DEV Community • 2026-08-17 17:12

From HTTP Requests to Atomic On-Chain Transactions

Coming from Web2, I initially thought of a Solana transaction like an API request: send request -> server processes it -> get response But after working with Solana transactions, I realized the mental model is quite different. A Solana transaction is a package containing things like signatures, instructions, accounts, and a recent blockhash. The transaction is signed before it can be acc...

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DEV Community • 2026-08-17 17:10

20 Native macOS Apps That Replaced My Electron Bloat for Good

I opened Activity Monitor last year on a Thursday afternoon, just to check something quick. Slack was sitting at 780MB. Discord was at 410MB. Notion was at 490MB. Spotify was lurking at 280MB. I had four apps open — and they'd already consumed nearly 2GB of RAM before I'd written a single line of code. My MacBook Pro fan was humming like it was rendering a film. The battery had dropped 18% in und...

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DEV Community • 2026-08-17 17:07

How to Add a Command Menu to a Telegram Bot with Python

A Telegram bot can recognize commands without displaying them in the client. However, users should not have to memorize every available command. Registering a command menu lets Telegram show a list when someone taps the menu button or types /. In this tutorial, we will create /start, /help, and /status handlers, register them through the Bot API, and display different command menus in private cha...

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DEV Community • 2026-08-17 17:07

Setting Up Java: 6 Questions I Had About JDK, VS Code, LTS and PATH

Java Learning Notes — Telusko Core Java | Video 02 After understanding the basic introduction and history of Java in the first lesson, the next question for me was: How do I actually set up Java on my computer and start writing programs? This lesson focuses on the development environment required before writing Java code. At first, I thought the setup would simply be: Download Java → Ins...

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Hacker News • 2026-08-17 17:07

Show HN: I turned the ending of Trainspotting into a tiny web art installation

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DEV Community • 2026-08-17 17:06

How to Stop AI Hallucinations: 6 Prompt Tactics That Reduce Made-Up Answers

AI hallucinations are a structural problem, not a bug you can patch. But you can reduce their frequency and make the ones that slip through much easier to catch — using specific prompt tactics that cost almost nothing to apply. Here are 6 that work. Why AI Makes Things Up Large language models don't "know" facts the way a database does. They predict the next most-plausible token ba...

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DEV Community • 2026-08-17 17:04

Few-Shot Prompting Explained: Teach AI With Examples (With Templates)

Few-shot prompting is one of the most powerful techniques for getting consistent, structured output from AI — and it requires no special setup, no APIs, no fine-tuning. Just examples inside the prompt. Here's how it works, when to use it, and 5 copy-paste templates to get started. What Is Few-Shot Prompting? Few-shot prompting is a technique where you give an AI model one to severa...

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

Cursor launches Origin, GitHub alternative

Article URL: https://cursor.com/changelog/origin-code-hosting Comments URL: https://news.ycombinator.com/item?id=49334209 Points: 92 # Comments: 39

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DEV Community • 2026-08-17 17:01

St-core.fscss Multi-Line Chart Pure CSS

st-core.fscss is a pure-CSS charting system that renders line charts with no SVG, no Canvas, and no JavaScript charting library. It uses: clip-path: polygon() for the line shapes CSS custom properties (--st-p1 … --st-p8) for the 8 data points FSCSS mixins that expand at compile/runtime into the required CSS How Multi-Line Charts Work You declare one @st-chart-line renderer. Every e...

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DEV Community • 2026-08-17 17:00

What I Learned Turning a Side Project Into a Sellable Dev Tool

I built Materia AI to solve a real problem I saw firsthand — messy menu and inventory management from my years working as a waiter. It's still growing. But somewhere along the way, I realized the backend pattern I kept reusing — the FastAPI structure, the AI service layer — was useful on its own, separate from the specific product. So I pulled it out and packaged it. Here's what that process actu...

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DEV Community • 2026-08-17 17:00

Real Ephemeris Math, Graceful AI Degradation, and a Rebuild Gotcha: Building an Astrology SaaS on Cloudflare Workers

Most "astrology app" tech stacks are a sun-sign lookup table and a template string. I've spent the last few months building AstroMystra, a Next.js app that does actual ephemeris calculations for Vedic (sidereal) and Western (tropical) charts, generates AI-written readings from those calculations, and — as of a few weeks ago — runs entirely on Cloudflare Workers instead of Vercel. Three engineerin...

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DEV Community • 2026-08-17 17:00

Building a GraphQL Video Discovery API with Strawberry and FastAPI over SQLite

Our Android client painted one search screen with four HTTP requests: GET /api/search?q=, then GET /api/channels?ids=, then GET /api/categories, then a per-video GET /api/video/{id} as soon as the user tapped a card. Every one of those endpoints returned the whole row out of SQLite — 41 columns for a video — and the client rendered six of them. On a throttled 3G profile the screen took 2.4 s at p9...

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DEV Community • 2026-08-17 16:55

Java Introduction: 8 Questions I Had as a Beginner and Their Easy Answers

Java Learning Notes — Telusko Core Java | Video 01 When I started learning Core Java, the first lesson looked simple. It talked about Java, the JVM, enterprise applications, WORA, James Gosling, Sun Microsystems, and Java releases. But while going through the lesson, I realized something: Knowing the words is not the same as understanding them. For example, I understood the sentence: "Jav...

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DEV Community • 2026-08-17 16:53

The Dangerous Docker Firewall Bypass (And How to Fix It Using UFW)

Every backend engineer and systems administrator knows the importance of running a solid firewall. You boot up a clean Ubuntu server instance, configure your UFW (Uncomplicated Firewall) rules to allow only port 80 and 443, block everything else by default, and feel completely secure. Then, you deploy a database or an internal admin dashboard inside a Docker container using a standard port mappin...

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DEV Community • 2026-08-17 16:45

Read Your AI Agent's Mind. OpenSearch Observability for LLM Traces.

You shipped your AI agent. It answers questions, calls tools, retrieves documents, and mostly does the right thing. Mostly. When it does the wrong thing, you have no idea why. The prompt looked fine. The retrieval seemed relevant. Somewhere between the user's question and the final answer, something went sideways, and you are staring at a log that says "200 OK" while your customer stares at nonsen...

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