DEV Community • 2026-07-29 06:44

How do you measure something that gives a different answer every time?

I had a simple-sounding question: does ChatGPT recommend this business? You'd think you just ask it. Ask ChatGPT "best personal injury law firm in NYC", see if the business is named, record yes or no. That works exactly once. Ask again an hour later and you might get a different answer. Not slightly different — potentially a completely different set of firms and a completely different set of cit...

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Hacker News • 2026-07-29 06:44

Show HN: Game Boy on the Beam – A DMG Emulator in Pure Elixir

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Experienced Devs • 2026-07-29 06:38

Job postings staying up?

Hey, I was wondering if anyone might have any insights on this. Some job postings for companies seem to stay up forever and I'm curious as to why? I know for a fact that two of these are not just farming CVs or gauging interest, as I have actively interviewed with them, but sadly it wasn't enough (for one of them I actually performed mediocre so I understand). But even months afterwards the same p...

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DEV Community • 2026-07-29 06:37

The Hidden Cost of a Log Line : Sync/Async Flush and everything in Between

log.info("user logged in") looks free. It isn't. Behind that one line is a chain of decisions — buffer or not, flush or not, block or drop, same thread or another — and each one trades latency, throughput, and durability against the others. This post walks the whole chain, from the method call down to the bytes hitting the disk platter. If you've ever wondered why your p99 latency has a mysteri...

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DEV Community • 2026-07-29 06:34

The file conversion tools I actually reach for (instead of installing FFmpeg again)

Every few months I hit the same wall. A client sends over a .mov file that needs to end up as an .mp4 for a web page, or someone drops a .heic photo in Slack and asks why it "won't open" on their Windows machine. My first instinct used to be brew install ffmpeg and then spend twenty minutes remembering the flags. These days I don't bother unless the job actually needs scripting or batch automation...

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DEV Community • 2026-07-29 06:28

Mes premiers pas avec Linux et Git : comment j'ai préparé ma réunion CloudHer

Il y a quelques jours, j'ai réalisé un truc qui m'a un peu stressée : ma réunion de la semaine 4 avec ma mentor Endah Bongo approchait, et le programme prévoyait Linux et Git. Sauf que... je ne maîtrisais pas encore les différentes commandes utilisées. Plutôt que de paniquer, j'ai décidé de prendre les choses en main et de tout pratiquer en direct, une commande à la fois, jusqu'à ce que ça fasse s...

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HackerNoon - programming • 2026-07-29 06:25

Inside Nanbeige4.2-3B-Base’s Looped Transformer Architecture

Nanbeige4.2-3B-Base combines a Looped Transformer, 28T training tokens, and math and code upsampling in a lightweight open model.Read All

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DEV Community • 2026-07-29 06:21

The 8 Most Expensive Unit Conversion Mistakes in Engineering History — and the Software Bugs That Caused Them

TL;DR Eight engineering disasters. Zero arithmetic errors. Every single one was caused by two numbers — both correct, both carefully computed — meaning different things on opposite sides of a software interface. One cost $65 billion. Another killed 28 soldiers because 0.1 can't be represented in binary. The fix is never the math. The fix is the label. There is a particular kind of s...

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DEV Community • 2026-07-29 06:20

Excited to launch my latest full-stack project: NeighborHelp! 🤝✨

Have you ever been in a situation where you needed immediate help from someone nearby? Maybe you needed a blood donor, a local electrician, emergency transportation, pet care, or just someone in your neighborhood who could help quickly. Finding the right person at the right time isn't always easy. That's exactly why I built NeighborHelp — a modern community platform that helps people connect wi...

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DEV Community • 2026-07-29 06:17

How I Made My AI CSV Import Pipeline Reliable by Adding Validation Layers 🚀

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. When building AI-powered applications, the hardest part is not connecting an LLM API. The real challenge is making AI-generated output reliable enough to use in real-world workflows. While building GrowEasy AI-Powered CSV Importer, I faced an important engineering challenge: How can we safely use AI-generated d...

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Product Hunt — The best new products, every day • 2026-07-29 06:16

Epilude

Local voice dictation for Mac for polished text Discussion | Link

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DEV Community • 2026-07-29 06:13

Two ceilings: taking a Go DNS server from 500 to 9,500 QPS

I run HydraDNS, an open-source DNS security gateway in Go. Last month I sat down to find out what one box could actually handle before I put it on anyone else's network. The plan had a rule I'd written for myself: every number we discover becomes either a sales claim or a fix ticket. No number, no claim. I expected to find one bottleneck. I found two, stacked on top of each other, and a third thi...

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DEV Community • 2026-07-29 06:12

Six Weeks In: An Evidence-Led Studio Checkpoint

Disclosure: This is an operator-authored checkpoint produced through AI-assisted review. It is not an independent technical audit. The assessment is based on an inspected historical code snapshot, exercised code paths, public artifacts, project records, and context supplied by the studio. Claims are separated into observed facts, reported context, indicators, and operator opinion. Corrections a...

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DEV Community • 2026-07-29 06:12

Introduction to co-routines in flutter (1)

In Dart and Flutter, there is no native keyword or native mechanism explicitly named "coroutine" like there is in Kotlin or Go. However, Dart implements the exact functional equivalent of coroutines through Futures, Streams, Generators, and the Event Loop architecture. To write deep, advanced asynchronous Flutter apps, you must master how Dart simulates coroutines under the hood, how its cooperat...

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Code-as-Documentation: An SQL Development Paradigm for the AI Era
DEV Community • 2026-07-29 06:11

Code-as-Documentation: An SQL Development Paradigm for the AI Era

A “runnable but unmaintainable” SQL query Let’s first look at the following SQL used in a production environment. The query aims to “merge all overlapping time intervals within each account”: SELECT account_id, MIN(start_date) AS start_date, MAX(end_date) AS end_date FROM ( SELECT account_id, start_date, end_date, prev_max, SUM(CASE WHEN start_date > prev_max OR prev_max IS ...

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DEV Community • 2026-07-29 06:09

How a Grocery Store Conversation Inspired Me to Build a Hindi–Malayalam–English Translator in Flutter

How a Grocery Store Conversation Inspired Me to Build a Hindi–Malayalam–English Translator in Flutter Hi everyone I'm a Flutter developer from Kerala, and I'd like to share the story behind one of my recent projects. Unlike many project ideas that begin with brainstorming or hackathons, this one started with a simple everyday situation. One day I was standing in a grocery store. A c...

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DEV Community • 2026-07-29 06:06

NGINX, Actually Explained: Architecture, Config, and the Mental Model That Makes It Click

Most people meet NGINX as a magic file they copy-paste until the 502 goes away. This post is the opposite: a tour of the model behind that file, drawn straight from the official docs at nginx.org/en/docs. Once the model clicks, the config stops being scary. Why NGINX is fast (and why the answer matters) Classic web servers spawn a process or thread per connection. That's fine at 200 co...

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DEV Community • 2026-07-29 06:02

Selenium with Python: The Ultimate Guide to Web Automation Testing

Introduction : In today's fast-paced software development world, delivering high-quality applications quickly is a top priority. Manual testing is effective for small projects, but as applications grow larger and more complex, it becomes time-consuming and error-prone. This is where Selenium comes into the picture. Selenium is one of the most popular open-source automation testing tools used for...

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DEV Community • 2026-07-29 06:00

Building a Secure Local AI Agent on Open-Source Infrastructure: Lessons from SGLang, Olares, and Real-World Audits

Originally published on tamiz.pro. The promise of Local AI is data sovereignty. By running Large Language Models (LLMs) entirely on-premise, organizations eliminate the risk of proprietary data leaking to third-party APIs. However, "local" does not automatically mean "secure." In fact, a poorly configured local LLM stack can expose your infrastructure to sophisticated attack vectors, including pr...

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DEV Community • 2026-07-29 06:00

How to Set Up a Professional Python Development Environment

How to Set Up a Professional Python Development Environment tags: python, tools, productivity, beginners tags: python, tools, productivity, beginners How to Set Up a Professional Python Development Environment You’ve written your first print("Hello, World!"), but now you’re staring at a messy terminal, conflicting package versions, and code that breaks every time you ...

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