Hacker News: Front Page • 2026-04-30 04:28

Monad Tutorials Timeline

Article URL: https://wiki.haskell.org/Monad_tutorials_timeline Comments URL: https://news.ycombinator.com/item?id=47958106 Points: 3 # Comments: 1

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DEV Community • 2026-04-30 04:26

🚀I Built a Multi-Agent AI Debate Arena with LangGraph and Groq🚀

Ever wondered what happens when you let AI argue with itself? I built AI Debate Arena — a terminal app where four AI agents (a moderator, a pro debater, a con debater, and a judge) run a full structured debate on any topic you give them, powered by LangGraph and Groq. Here's how it works and what I learned building it. 🧠 The Concept The idea is simple: instead of one AI giving you...

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newest submissions : multi • 2026-04-30 04:24

Best way to convert JPG to WebP?

I need to convert some JPG images to WebP. Any tool recommendations? submitted by /u/tteei to r/software [link] [comments]

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Hacker News: Front Page • 2026-04-30 04:23

Lessons from Building an OTel Normalizer for GenAI

Article URL: https://www.groundcover.com/blog/otel-normalizer-genai-part-1 Comments URL: https://news.ycombinator.com/item?id=47958081 Points: 3 # Comments: 0

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DEV Community • 2026-04-30 04:22

AgentGraph Update

Long-form (1500+ words). 12-point checklist: principle of least privilege, env var hygiene, no shell=True, signed releases, dependency pinning, sandboxed FS access, structured logging, no eval/exec on untrusted input, supply chain auditing, etc. Each point with a code example (good vs bad). Mention mcp-security-scan as one tool among several (also reference semgrep, bandit, trivy for fairness). Fo...

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Why I cut my dashboard from 12 metrics to 5 — and decisions got faster
DEV Community • 2026-04-30 04:21

Why I cut my dashboard from 12 metrics to 5 — and decisions got faster

"We built a sales dashboard, but looking at it doesn't tell us what to do next." This is the most common complaint I hear from ecommerce operators. I've felt it myself — staring at a 12-metric dashboard, ranking the movements in my head, and only then starting to think about action. By the time I had a hypothesis, the meeting was over. The fix wasn't a fancier visualization. It was deletion. I cu...

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Why Chat-with-Docs Breaks in Real Companies: An Engineering Look at Onyx
DEV Community • 2026-04-30 04:21

Why Chat-with-Docs Breaks in Real Companies: An Engineering Look at Onyx

Based on the onyx.guru page and the Onyx open-source repository reviewed on April 29, 2026. Most internal AI projects begin with a reasonable demo: connect a folder of documents, add retrieval, ask a question, get an answer with citations. Then the system meets a real company. The docs are scattered across Google Drive, Notion, GitHub, Slack, support tickets, policy pages, and user uploads. Som...

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DEV Community • 2026-04-30 04:20

Surviving Scale: How to Fix PostgreSQL Deadlocks in Laravel 🛑

The Nightmare of the 500 Server Error As your B2B SaaS platform grows at Smart Tech Devs, you will inevitably start relying on Database Transactions to ensure data integrity. If a user pays an invoice, you need to update their wallet balance and mark the invoice as paid. If one fails, both must roll back. However, under high concurrency, you might suddenly start seeing a terrifying log entry: PDO...

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5 FSR-402 Force Sensing Projects for HCI Research and Human Sensing
DEV Community • 2026-04-30 04:20

5 FSR-402 Force Sensing Projects for HCI Research and Human Sensing

5 FSR-402 Force Sensing Projects for HCI Research and Human Sensing Build pressure-aware systems: seating posture monitor, musical expression controller, accessibility switch, smart door handle, and grip force trainer The FSR-402 (Force Sensing Resistor) is a thin, flexible polymer thick film device that decreases resistance as force is applied across its surface. Unlike load cells t...

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Experienced Devs • 2026-04-30 04:18

Summary of my (4.5 YOE) SWE job hunt results

Intro: Making this post to encourage others that it's possible to land a new job in this really crazy market even with just a few YOE. My background: I'm a backend SWE with some experience in frontend. Located in the SF bay area (also a US citizen) with a CS degree. Previously worked at two startups, getting laid off at both. The most recent layoff happened in late March 2026, but had gotten notic...

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DEV Community • 2026-04-30 04:18

Como criei um site que reduziu as ligações de um laboratório em 60%

Trabalhando com um laboratório de análises clínicas aqui no Brasil, percebi que o maior problema deles não era técnico — era operacional. Pacientes ligavam o dia inteiro pra saber se o resultado estava pronto. A recepção não dava conta. A solução foi criar uma área do paciente simples: login por CPF + data de nascimento, resultado disponível assim que o sistema liberava. Stack: React + Node + P...

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newest submissions : multi • 2026-04-30 04:11

Wallpaper Sync: A free Mac app for animated wallpapers (Desktop + Lock Screen)

Hi everyone! I developed a free, open-source macOS app that lets you set any video as an animated wallpaper. The unique thing is that it also syncs it with your lock screen (login screen). Most other apps can't do this because Apple sandboxes App Store apps and doesn't allow modification of system aerial files. This app works around that by leveraging internal APIs. Key features: - One-time HEVC c...

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How We Built a Geospatial AI That Reads Satellite Images
DEV Community • 2026-04-30 04:08

How We Built a Geospatial AI That Reads Satellite Images

A developer’s guide to analyze_image, analyze_text, and the future of location intelligence. The motivation You’re a developer. You know that satellite imagery is everywhere. But most GeoAI solutions are either: Black‑box desktop tools with 500 buttons Intelligence‑grade surveillance systems you’d never touch Overhyped pixel classifiers that can’t tell a port from a parking lot ...

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DEV Community • 2026-04-30 04:05

Ghostty GitHub'dan Ayrılıyor: Geliştirici Araçları Üreticileri İçin Ne Anlama Geliyor?

28 Nisan 2026'da Mitchell Hashimoto, açık kaynaklı terminal emülatörü Ghostty'nin GitHub'dan ayrılacağını duyurdu. Hashimoto GitHub kullanıcısı 1299; Şubat 2008'den beri platformu neredeyse her gün kullandı. Ancak karar gününde bu geçmiş artık belirleyici değildi: kişisel günlüğünde zaten “neredeyse her gün bir X var” şeklinde kesintileri takip ediyordu ve aynı gün yaşanan GitHub Actions hatası PR...

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DEV Community • 2026-04-30 04:05

Fix Your Prompt Structure Before You Touch Your Infrastructure

Fix Your Prompt Structure Before You Touch Your Infrastructure Most engineering teams treat LLM inference costs as an infrastructure problem. They evaluate model quantization, shop for cheaper GPU rentals, debate whether to move from GPT-4o to Claude Sonnet, and benchmark open-source alternatives. I have watched teams spend weeks on this and save fifteen percent. The same teams were run...

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newest submissions : multi • 2026-04-30 04:02

/r/WorldNews Live Thread: Russian Invasion of Ukraine Day 1526, Part 1 (Thread #1673)

submitted by /u/WorldNewsMods to r/worldnews [link] [comments]

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Iran currency plunges as dollar crosses 1.8 million in open market
newest submissions : multi • 2026-04-30 03:59

Iran currency plunges as dollar crosses 1.8 million in open market

submitted by /u/Christian-Rep-Perisa to r/worldnews [link] [comments]

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DEV Community • 2026-04-30 03:57

How I Built a Production Android App in 7000+ AI Sessions

The Experiment What happens when a solo developer tries to build a production Android app using AI as the primary coder? I've been building Background Camera RemoteStream — an Android app that records video in the background with the screen off and streams to YouTube Live — using Claude Code (Anthropic's AI coding tool) for over 7000 sessions spanning 6+ months. The app is now live on...

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I'm Building My Own CRM: Karkium — The "No-Theater" Software I Wish Existed
DEV Community • 2026-04-30 03:48

I'm Building My Own CRM: Karkium — The "No-Theater" Software I Wish Existed

I'm finishing my own CRM, and I want to share why I decided to build it instead of using one of the big names out there. For years I watched the same exhausting ritual repeat itself in enterprise software: "request a demo," get eight calls from pushy salespeople, and then realize the features I actually needed were locked behind an "Enterprise" plan that cost $800 a month. I got tired of it. So I...

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Product Hunt — The best new products, every day • 2026-04-30 03:47

Docky

Pin, group, and remove apps easily from your dock Discussion | Link

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