DEV Community • 2026-04-04 02:30

Secure Cross-Platform File Sharing: A Unified Solution for Diverse Devices and Networks

Introduction: The Need for Cross-Platform File Sharing Sharing files across devices should be simple, but it’s often anything but. Take AirDrop, for instance. While it’s convenient within Apple’s walled garden, it fails spectacularly outside of it. This isn’t just a minor inconvenience—it’s a symptom of a larger problem: the fragmentation of operating systems and network environments. W...

0 0
12m read
Hacker News: Front Page • 2026-04-04 02:26

Show HN: Travel Hacking Toolkit – Points search and trip planning with AI

I use points and miles for most of my travel. Every booking comes down to the same decision: use points or pay cash? To answer that, you need award availability across multiple programs, cash prices, your current balances, transfer partner ratios, and the math to compare them. I got tired of doing it manually across a dozen tabs.This toolkit teaches Claude Code and OpenCode how to do it. 7 skills ...

0 0
1m read
DEV Community • 2026-04-04 02:15

I Tested a Real AI Agent for Security. The LLM Knew It Was Dangerous — But the Tool Layer Executed Anyway.

Every agent security tool tests the LLM. We tested the agent. Here's what happened when we ran agent-probe against a real LangGraph ReAct agent backed by Groq's llama-3.3-70b with 4 real tools. The Setup Not a mock. Not a simulation. A real agent: Framework: LangGraph ReAct (LangChain) LLM: Groq llama-3.3-70b-versatile, temperature 0 Tools: file reader, database query, HTTP clien...

0 0
3m read
I Got Tired of Surprise OpenAI Bills, So I Built a Dashboard to Track Them
DEV Community • 2026-04-04 02:09

I Got Tired of Surprise OpenAI Bills, So I Built a Dashboard to Track Them

A few months ago, I got a bill from OpenAI that was about 3x what I was expecting. No idea why. Was it the new summarization feature we shipped? A single power user going nuts? A cron job gone wild? I had no clue. The default OpenAI dashboard just gives you a total, which is not super helpful for finding the source of a spike. This was the final straw. I was tired of flying blind. The P...

0 0
4m read
How to Turn a Go GUI App into a Mac App with Parall
DEV Community • 2026-04-04 02:05

How to Turn a Go GUI App into a Mac App with Parall

I am the developer of Parall, and I have been using it for a very practical workflow on macOS that makes local GUI development much more convenient. Instead of opening Terminal every time, typing a command, and launching the app manually, I create a lightweight app bundle for the project and pin it to the Dock. Then the loop becomes very simple. Edit code, quit the app, click the Dock icon, and i...

0 0
3m read
Synthetic Population Testing for Recommendation Systems
DEV Community • 2026-04-04 02:04

Synthetic Population Testing for Recommendation Systems

Offline evaluation is necessary for recommender systems. It is also not a full test of recommender quality. The missing layer is not only better aggregate metrics, but better ways to test how a model behaves for different kinds of users before launch. TL;DR In the last post, I argued that offline evaluation is useful but incomplete for recommendation systems. After that, I built a sma...

0 0
7m read
Experienced Devs • 2026-04-04 01:59

Stuck in messy situation

After my time at Microsoft I essentially I joined this company and org as a senior engineer and recruiter said it would be possible to get to lead with experience and if I perform well in about a year since org is looking to expand team in this location. So I went all in. First 2 months made it to org spot light during town hall for my work. Manager loved me wanted me to write about my experience ...

0 0
4m read
DEV Community • 2026-04-04 01:49

I Analyzed 500 AI Coding Mistakes and Built an ESLint Plugin to Catch Them

Here's a pattern you've probably seen: const results = items.map(async (item) => { return await fetchItem(item); }); Looks fine, right? Your AI assistant wrote it. Tests pass. Code review approves it. Then production hits, and results is an array of Promises — not the values you expected. The await on line 2 does nothing. You needed Promise.all(items.map(...)) or a for...of loop. T...

0 0
4m read
DEV Community • 2026-04-04 01:45

Seedance 2.0 Deep Dive: ByteDance AI Video That Tops Sora and Veo

Originally published at heyuan110.com In February 2026, ByteDance released Seedance 2.0. Within weeks, it hit #1 on the Artificial Analysis text-to-video leaderboard — beating Google Veo 3, OpenAI Sora 2, and Runway Gen-4.5 in blind human evaluation. If you are reading this from outside China, you have probably heard the buzz but face a wall of confusion: What is Dreamina? What is VolcEngine? Ca...

0 0
1m read
DEV Community • 2026-04-04 01:45

Cursor Composer 2: The Kimi K2.5 Controversy and What It Means

Originally published at heyuan110.com On March 19, Cursor shipped Composer 2 with a triumphant blog post. Three days later, a developer found kimi-k2p5-rl-0317-s515-fast in the API config. That single string unraveled a story about transparency, open-source ethics, and the global nature of AI infrastructure. Key findings: Composer 2 is built on Moonshot AI's Kimi K2.5 (Chinese open-source MoE ...

0 0
1m read
DEV Community • 2026-04-04 01:45

MCP vs Skills vs Hooks in Claude Code: Which Extension Do You Need?

Originally published at heyuan110.com Claude Code has three distinct extension mechanisms: MCP (Model Context Protocol), Skills, and Hooks. They look related on the surface, but they operate at fundamentally different layers: Hooks (bottom layer): Lifecycle event automation — "what must always happen" MCP (middle layer): External tool connections via open protocol — "what can be done" Skills...

0 0
1m read
DEV Community • 2026-04-04 01:44

OpenClaw Multi-Agent Configuration: Architecture and Production Patterns

Originally published at heyuan110.com Your single OpenClaw agent worked great for two weeks. Then it started hallucinating project context into unrelated conversations, confusing coding tasks with writing tasks, and taking 15 seconds to respond because its memory index had grown to 200MB. The problem is not the model. The problem is architectural: one agent cannot hold unlimited context domains ...

0 0
1m read
DEV Community • 2026-04-04 01:44

AI-Generated Interview Ethics: Why Disclosure Is Not Enough

The strangest thing about Esquire Singapore’s Mackenyu piece is not the sentence, “The following interview was produced with Claude, Copilot, and edited by humans.” It’s the calm, workmanlike tone of it. As if an AI‑generated interview with a living actor is just another production choice, like swapping the font. TL;DR AI-generated interview ethics are not solved by disclosure, because the har...

0 0
7m read
DEV Community • 2026-04-04 01:43

How to Write CLAUDE.md Files That Actually Work (Harness Engineering #2)

Originally published at heyuan110.com This is Part 2 of the Harness Engineering series. Most CLAUDE.md files are bad — not because people don't try, but because they optimize for the wrong thing. ETH Zurich researchers tested 138 agentfiles across multiple AI coding agents. The results: Human-written, concise (<60 lines): +4% success rate LLM-generated, verbose (200+ lines): -3% success ra...

0 0
1m read
DEV Community • 2026-04-04 01:40

Yelp Dataset Challenge: Review Rating Prediction

{{ $json.postContent }}

0 0
1m read
DEV Community • 2026-04-04 01:40

Master Your Wellness: Building a Health Knowledge Graph with LLMs and Neo4j 🧬

We are living in the golden age of personal telemetry. Our watches track our heart rates, our phones log our steps, and apps record every calorie. However, most of this data sits in "silos"—disconnected tables that tell us what happened, but never why. If you've ever wondered if that late-night ramen is the reason your deep sleep plummeted, you're looking for causal relationships, not just raw n...

0 0
4m read
Hacker News: Front Page • 2026-04-04 01:37

Delve Removed from Y Combinator

Article URL: https://www.ycombinator.com/companies/delve Comments URL: https://news.ycombinator.com/item?id=47634690 Points: 9 # Comments: 2

0 0
1m read
A Case Study in Solving the Riddle of FrancisTRDEV
DEV Community • 2026-04-04 01:30

A Case Study in Solving the Riddle of FrancisTRDEV

Recently, a riddle was posted by @francistrdev on 1st April on dev.to that presented a unique challenge: a multi-line poem obscured by Caesar shifts. Riddle me this DEV and MLH Community [April Fools] FrancisTRᴅᴇᴠ (っ◔◡◔)っ ...

0 0
10m read
DEV Community • 2026-04-04 01:25

What Is a Container? The OS-Level Truth Most Engineers Don't Know

"You Keep Using That Word" Dispelling Container Misconceptions at the OS Level Before we write a single line of code, we need to kill the buzzword fog. What a Container Actually Is The marketing definition you have heard a hundred times: "a container is an executable unit of software with its dependencies bundled together." That is not wrong, but it tells you noth...

0 0
8m read
How to Understand Unwritten Rules at Work 💼
DEV Community • 2026-04-04 01:22

How to Understand Unwritten Rules at Work 💼

You read the onboarding wiki. You join your first few meetings. You nod along, follow the process — and still feel like you’re missing something. Everyone else seems to know how things really work, but no one’s said it out loud. Sound familiar? Every tech company has two sets of rules: the ones on the wiki, and the unwritten ones that govern day-to-day life 🤷 Back when I was at Amazon, everyone ...

0 0
4m read
Previous Next