Learning TCP/IP From the Linux Side: Spec, Code, and Wire
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Learning TCP/IP From the Linux Side: Spec, Code, and Wire

My networking notes used to be full of layer names, header diagrams, and TCP flags. I knew the terminology, but when someone asked what happens after calling send() , my explanation stopped at "the data goes down the stack." I changed my approach by connecting three things: The spec: what the RFC defines. The code: how Linux or C headers represent it. The wire: what tcpdump or Wireshark captures. This post applies that approach to four exercises, moving from packe...
Building a Live 3D & 1M-Token Engineering Cookbook with Google DeepMind's Gemini 4 Argon
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Building a Live 3D & 1M-Token Engineering Cookbook with Google DeepMind's Gemini 4 Argon

Google DeepMind recently introduced Gemini 4 Argon ( gemini-4-argon ) , marking a major architectural leap for long-horizon software engineering and 3D spatial reasoning: 1,000,000 Input / 1,000,000 Output Unified Token Horizon (a 15.6x increase in output capacity from 64K tokens via the Long-Decode Continuation Protocol) 87.0% SOTA on Embodied 3D Reasoning (ERQA) and 91.7% on LVBench (long video understanding) 77.9% SOTA on DeepSWE v1.1 (autonomous software engineering an...
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AI matrix chess concept and the Hacktoberfest Side Hustle challenge:

futuristic open-source AI matrix chess concept and the Hacktoberfest Side Hustle challenge: ♟️ NeonMatrix Chess AI: An Open-Source Futuristic Chess Arena This is a submission for the https://dev.to/challenges/hacktoberfest-week2-2026-10-12 https://via.placeholder.com/1200x600?text=NeonMatrix+Chess+AI What I Built NeonMatrix Chess AI is a futuristic chess platform set within a glowing cyberpunk cityscape illuminated by neon lights and surrounded by a digital Hacktoberfest jungl...
ProofCheck: checking UPI payment screenshots against the bank statement, on your own laptop
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ProofCheck: checking UPI payment screenshots against the bank statement, on your own laptop

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built If you've ever paid a tuition fee, a society maintenance bill or a home baker in India, you know how it goes. You pay by UPI, take a screenshot, send it on WhatsApp. Done. Now think about the person on the other end. A tuition teacher with 40 students gets 40 screenshots a month, at random times, buried in the rest of her WhatsApp. At some point she sits down with her...
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InvoiceFlow: local-first invoice & receipt sorter for freelancers

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 2: Side Hustle What I Built InvoiceFlow turns a folder of receipts, invoices, and PDFs into a clean CSV your accountant can actually use — 100% locally, with zero cloud API costs, zero token bills, and zero data leaving your laptop. It is built for the freelancer who keeps a shoebox of receipts, the Etsy seller who loses track of material spend, and the consultant whose accountant emails every Ma...
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Building a Scalable IoT Ingestion Server for Telematics Data: Ensuring Integrity and Adaptability

Introduction: The Hard Truth About IoT Ingestion for Telematics Building a reliable IoT ingestion server for telematics data isn’t about handling the first byte of data—it’s about surviving everything that comes after. In my experience with a Python-based pipeline ingesting TCP sensor data from heavy equipment, the real challenges emerged far beyond initial reception. The pipeline—Python → local disk spool → RabbitMQ → PostgreSQL—looked straightforward on paper. Reality, however, demanded a ...
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How to Build a Claude Code Skill That Chases Your Unpaid Invoices (Without Ever Sending an Email)

If you run a one-person consultancy, late invoices cost you twice: once in cash flow, and again in the 20 awkward minutes it takes to write a reminder that's firm but doesn't burn the relationship. This tutorial builds a Claude Code skill that does the awkward part: it reads a plain-text invoice list, works out who is overdue, and drafts the right reminder for how late each one is. You still press send. You need Claude Code installed ( https://code.claude.com/docs/en/setup ). 1....
Connect Your App to Your Enterprise Traces
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Connect Your App to Your Enterprise Traces

Your customer taps “Place order.” The request crosses your app, an API gateway, a native backend, a payment service and a database. Your operations team needs to see that path in the same tracing system it uses for the rest of the company. Neither the client app nor a compiled Java server should disappear from that picture. What is Codename One? Codename One is an open-source framework for building native iOS, Android, desktop, and web apps from a single Java or Kotlin codebase. Learn more ...
RAG evaluation metrics explained
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RAG evaluation metrics explained

TL;DR: RAG metrics fall into three categories. Retrieval metrics (hit rate, recall@k, MRR, nDCG) tell you whether the system retrieves the right chunks. Generation metrics (faithfulness, answer relevancy, correctness) tell you whether the LLM used them well. Operational metrics (cost, latency, storage) tell you if you can afford to run it. This guide explains each metric with an example and tells you which ones to focus on for your setup. There’s no shortage of RAG metrics. Libraries expose ...
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Building MoneyMov — A Free Personal Finance Tracker with MERN

I recently built MoneyMov , a free personal finance tracker to help people understand where their money is going. The idea was simple: Know where your money moves. Instead of building another complicated finance application, I wanted to create something simple enough for everyday use. What Is MoneyMov? MoneyMov is a personal finance tracker where users can manage their: 💰 Income 💸 Expenses 📊 Spending categories 📈 Investments 🤝 Committees / Bachat 💵 ...
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Blazor ErrorBoundary

Blazor is a web UI framework from Microsoft that allows developers to build interactive web applications using C#, .NET, and Razor components. A Blazor component is a reusable part of a user interface that can contain HTML markup, C# logic, data binding, event handlers, and conditional rendering. Let's understand this with a simple example of a product details component. <h3>Product Details</h3> <div class="card shadow-sm p-3"> <h5>@productName</h5...
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Decompiling anonymous types: the generated generic class behind new { a, b }

Type a new { } in C# and you create an object with no type you can name. var row = new { Name = customer.Name, Total = customer.Total }; gives you a row you can read .Name and .Total off, pass to LINQ, and compare for equality — but try to write its type and you cannot, because there is no keyword for it. That absence is a source-language illusion, exactly like ?. having no IL opcode. In the compiled assembly the anonymous type is a perfectly ordinary class. The compiler just synthes...
HackerNews

The Tragedy of AI Coding

Article URL: https://www.theatlantic.com/ideas/2026/10/ai-programming-big-tech-regulations/688960/ Comments URL: https://news.ycombinator.com/item?id=50075448 Points: 3 # Comments: 0
HackerNews

Zen and the Art of AI-Assisted Development

Article URL: https://blog.thanethomson.com/2026/10/13/zen-and-the-art-of-ai-assisted-development/ Comments URL: https://news.ycombinator.com/item?id=50076177 Points: 2 # Comments: 0
HackerNews

Character.ai Files for Bankruptcy

Article URL: https://www.lawcommentary.com/articles/character-ai-bankruptcy-disney-bid-platform-shutdown Comments URL: https://news.ycombinator.com/item?id=50076225 Points: 2 # Comments: 1
HackerNews

Show HN: Hatoba, an open-source SSH client with an AI assistant and E2EE sync

I've used SSH tools for years and didn't really plan on building yet another SSH client, but I ended up building one the way I wanted. Hatoba is a desktop SSH client for Windows, Linux and macOS. It's written in Rust with Tauri 2 and MIT licensed. Each terminal has an AI assistant panel next to it. You describe the problem, and it reads the terminal screen, runs commands, types into the shell, and reads, edits and searches files on the host to find the cause and fix it. You can approve every com...
HackerNews

Show HN: Commit-Aware Router, route LLM traffic around your AI/cloud commitments

LLM routers can optimize for different factors like price, latency, quality, etc. Enterprises tend to have prepaid AI credits, minimum-spend agreements, cloud commitments, or commercial ceilings across OpenAI, Anthropic, AWS, Azure, and other providers. We’ll call these “AI commits”. This project is designed to consider the state of an enterprises’ current AI commits and use it to inform LLM routing decisions alongside other common variables (price, performance, etc.). This is an early PoC buil...
HackerNews

AI 3D Prints: Are Claude's Defaults Enough?

Article URL: https://www.youtube.com/watch?v=qcWOvPLFXgg Comments URL: https://news.ycombinator.com/item?id=50076605 Points: 4 # Comments: 0
HackerNews

AI distrust is GitHub's opportunity

Article URL: https://www.infoworld.com/article/4233357/ai-distrust-is-githubs-opportunity.html Comments URL: https://news.ycombinator.com/item?id=50076691 Points: 3 # Comments: 0
HackerNews

Ask HN: In the new AI world, what's the best way to review code?

Just as title says, in the world of ai accelerated code production, when you're in charge of a repo or project, how do you usually look at code from proposed changes ? I'm interested to find what your workflows look like these days. Comments URL: https://news.ycombinator.com/item?id=50076985 Points: 2 # Comments: 3
HackerNews

AI Dividend: Economy of the Near Future

Article URL: https://robotpaidmoose.com/ Comments URL: https://news.ycombinator.com/item?id=50077204 Points: 3 # Comments: 1