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One of the challenges I faced while building my LaTeX Writer project was implementing version control and project forking in a storage-efficient way. A typical LaTeX project contains multiple files. Even a simple project usually has a "main.tex" file, bibliography files, images, style files, and other supporting documents. If I stored a complete copy of every file for every version or fork, storage requirements would grow rapidly. Imagine a project with four files and ten versions. Storing the entire project for every version would mean storing the same files repeatedly, even when only one line changed. Forking would create an even bigger problem because every fork would require another complete copy of the project. Instead of accepting this inefficiency, I started researching how large platforms solve the same problem. GitHub was the obvious inspiration. Learning from GitHub GitHub does not store a complete copy of a repository every time a change is made. Instead, it stores content separately and uses references to connect files, commits, and repositories. This idea became the foundation for my own implementation. Project Structure Whenever a new project is created, a default file called "main.tex" is generated automatically. The project itself does not directly contain file contents. Instead, it stores metadata such as: Project ID Owner ID Root Folder ID File References Each file also has its own metadata record containing: File ID File Name Blob ID Project ID Owner ID Folder ID The actual content is not stored inside the file metadata. Instead, the content lives inside a separate entity called a Blob. Loading a Project When the editor loads a project, it reconstructs the directory structure using metadata. The process works like this: Retrieve the project's Root Folder ID. Find all folders belonging to that folder hierarchy. Find all files belonging to each folder. Build the directory tree for the frontend. Because files and folders are stored independently, the

SISTEMA INTELIGENCIA DIGITAL HUMANA (IDH) ARQUITECTURA DE CONSTRUCCIÓN GLOBAL Y ESPECIFICACIÓN TÉCNICA FINAL VERSIÓN 2.0 EJECUCIÓN REAL EN HARDWARE BARE-METAL DESCENTRALIZADO CAPA 1: SUBSISTEMA DE INGESTA MULTIMODAL, PERCEPCIÓN AFECTIVA Y FRONTERA DE ADQUISICIÓN Esta capa opera como el sistema nervioso periférico de la Inteligencia Digital Humana. Su función es capturar los flujos del mundo real (texto, audio, imagen), autenticarlos a nivel de kernel, extraer el estado emocional del usuario y unificar la información en un único espacio matemático comparable antes de que llegue al motor de procesamiento central. 1.1 Frontera de Ingreso y Seguridad Perimetral (Kernel Space) Arquitectura de Red: El sistema levanta sockets TCP/IP directos y conexiones QUIC/UDP sobre hardware Bare-Metal. QUIC maneja la multiplexación de flujos (audio, video, texto) en paralelo sin bloqueo de cabecera, permitiendo comunicación fluida en tiempo real. Cifrado y Autenticación en Dos Niveles: Nivel 1 - Handshake QUIC: Durante el establecimiento inicial de la conexión QUIC, los paquetes de handshake contienen una firma criptográfica Ed25519 en sus campos de token. El programa eBPF/XDP en espacio kernel valida exclusivamente esta firma en los paquetes de handshake, los cuales no están completamente cifrados. Paquetes sin firma válida son descartados inmediatamente en la tarjeta de red. Nivel 2 - Token de Sesión Efímero: Una vez validado el handshake, se establece un token de sesión efímero con tiempo de vida limitado. Los paquetes subsiguientes de datos se validan contra este token sin necesidad de verificar la firma completa en cada paquete. Filtro eBPF/XDP en Espacio Kernel: El código de seguridad se inyecta directamente en el espacio de ejecución del kernel mediante un programa eBPF acoplado a XDP. Funciones del filtro: · Descarte temprano de ataques DDoS y tráfico malformado a nivel de controlador de red, antes de consumir ciclos de CPU en espacio de usuario. · Validación de firmas Ed25519

📚 Limn Engine — Complete API Reference Quick Navigation Class Purpose Level Display Canvas, game loop, input, camera, scenes 🟢 L1 Component Every visible game object 🟢 L1 Camera Viewport control (follow, shake, zoom) 🟡 L2 move Movement, physics, particles, helpers 🟢 L1 state Read-only query helpers 🟢 L1 TileMap Grid-based levels 🟡 L2 Tctxt Rich text with backgrounds 🟢 L1 Sound Single audio file 🟢 L1 SoundManager Multiple sounds, volume control 🔴 L4 ParticleSystem Emit, burst, continuous emitters 🟠 L3 Sprite Spritesheet animation 🟡 L2 Display The heart of every Limn Engine game. Creates the canvas, runs the game loop, captures input, manages the camera, and controls scenes. Constructor const display = new Display (); Properties Property Type Description .canvas HTMLCanvasElement The game canvas .context CanvasRenderingContext2D 2D drawing context .keys Array Boolean array indexed by keyCode .scene Number Current active scene (default 0) .camera Camera Attached camera instance .deltaTime Number Time since last frame (seconds) .fps Number Current frames per second .frameNo Number Total frames elapsed .x / .y Number false Methods Method Parameters Description .start(w, h, node) width, height, parentNode Initialise canvas and start game loop .perform() — Activate dual-canvas pipeline (call before .start() ) .add(comp, scene) Component, scene number Register a Component for rendering .stop() — Pause the game loop .scale(w, h) width, height Resize canvas after start .backgroundColor(color) CSS color Set background colour .lgradient(dir, c1, c2) direction, color, color Linear gradient background .rgradient(c1, c2) color, color Radial gradient background .fullScreen() — Enter fullscreen .exitScreen() — Exit fullscreen .tileMap() — Build TileMap from display.map and display.tile Usage const display = new Display (); display . perform (); display . start ( 800 , 600 ); display . backgroundColor ( " #0a0a2a " ); const player = new Component ( 40 , 40 , " blue " , 100 , 100 ); d

Abstract In modern software engineering, writing code that simply "works" is only the first step. The real challenge lies in designing systems that are maintainable, scalable, and easy to test. This article explores the Dependency Inversion Principle (DIP), the final pillar of the SOLID design principles. Through a practical, real-world example in Kotlin, we will demonstrate how to transition from a tightly coupled architecture to an abstraction-based design. This shift dramatically improves our codebase, facilitates unit testing, and prepares our applications for future growth. Introduction: The Chaos of Coupling As applications grow, it is common to see how a minor change in a database schema or a third-party API triggers a domino effect, breaking unrelated parts of the system. This fragility is a direct consequence of tight coupling. Software design principles, particularly SOLID, were established to prevent this architectural decay. Today, we focus on the "D" in SOLID: the Dependency Inversion Principle (DIP). This principle establishes two core rules: High-level modules should not depend on low-level modules. Both should depend on abstractions (interfaces). Abstractions should not depend on details. Details (concrete implementations) should depend on abstractions. The Scenario: An E-commerce Payment Processor Imagine you are building the billing system for an online store. To process purchases, the system needs to connect to a payment gateway, such as PayPal. The Bad Way: Tight Coupling (Violating DIP) In this initial design, our high-level business logic (OrderProcessor) directly instantiates and depends on the concrete low-level class (PayPalService). // Low-level component (Concrete detail) class PayPalService { fun executePayment(amount: Double) { println("Processing payment of $$amount via PayPal API.") } } // High-level component (Business logic) class OrderProcessor { // Tight coupling: this class depends directly on a concrete implementation private val

Days before Anthropic took its most advanced AI models offline, the White House ordered the company to revoke SK Telecom’s access to Claude Mythos over claims of alleged ties to China.

FCC considers AT&T petitions to preempt state rules and discontinue phone service.

Nvidia's self-improvement program for robots enlists teams of AI coding agents.

In Shenzhen, workers at IO-AI Tech control humanoid robots using a VR rig reminiscent of Ready Player One.

Social media feeds are becoming more customizable as platforms like Threads, Instagram, and TikTok introduce tools that let users directly influence the algorithms powering their recommendations.

Mastodon’s newly launched newsletter feature lets anyone subscribe to creators by email, even without a Mastodon account.

Google is betting generative AI can breathe new life into the smart speaker. The company's new $99.99 Google Home Speaker replaces the rigid commands of the Google Assistant era with more conversational Gemini interactions.

Pramaana will focus on highly sensitive verticals like law, drug discovery, and tax preparation — where errors can be costly and reliability is at a premium.

The first two articles in this series each showed one technique. Implementation notes #001 was a dynamic dropdown — a form field that fills itself from an API. Implementation notes #002 was a dynamic credential — an API key that arrives from the form and threads through to the HTTP nodes. This article is the capstone. It walks through all-services-demo , the example workflow that ships with n8n-nodes-ldxhub , where those two techniques combine with a Switch node to host five different AI document-processing services inside one workflow — structured extraction, translation refinement, OCR, PDF conversion, and text extraction. The screenshots and the workflow JSON below come from the n8n-nodes-ldxhub package. The patterns themselves are generic — they work for any set of services you want to consolidate into a single template. This is not a "follow these steps" article. It's a parts catalog. No two readers are solving the same problem, and templates rarely fit anyone's situation as-is. Take what fits. Drop the rest. You don't need to understand all 46 nodes to reuse the patterns. The shape The workflow has 46 nodes — large enough to look intimidating in the editor, but structurally it's just five repeated paths plus a small routing section. The entry section is two nodes: On form submission — the trigger. Asks the user which service they want and collects an API key. Route by Service — a Switch node with five outputs, one per service. Everything to the right of the Switch is service-specific. Five paths fan out: StructFlow, RefineLoop, RenderOCR, CastDoc, ExtractDoc. Each path ends in two Form Ending nodes — one for success (auto-downloads the result), one for error. That's the spine: form → switch → service path → ending. The complexity is pushed into the service paths. The spine: routing by static comparison The Switch node ("Route by Service") uses Rules mode. Each rule reads the same expression from the form — {{ $json.service }} — and compares it to a static serv

Most developers run git pull dozens of times a week without thinking about it. And most of the time, it works. Then one day you open a PR and the reviewer says "can you clean up the merge commits?" You look at your branch and see three "Merge branch 'main' into feature/login" commits scattered through history. The feature itself is 5 commits. The log is a mess. That mess comes from one decision: using git pull instead of git pull --rebase . Here's what's actually happening, and why the rebase variant produces cleaner history for teams. The setup: diverged history You're working on feature/login . You commit two changes locally ( X , Y ). Meanwhile, your teammate pushes two commits to main ( C , D ). Your branch and main have now diverged . Neither is a strict superset of the other. Git needs to reconcile them when you pull. Shared history: A → B Your local: A → B → X → Y (you added X, Y) Remote main: A → B → C → D (teammate added C, D) Git has two strategies for this reconciliation. Strategy 1: git pull (merge) A plain git pull creates a merge commit that joins your local history with the remote. Your commits and the remote's commits both appear in the log, connected by a merge node. The git log reads: M Merge branch 'main' into feature/login D fix: timeout on slow connections Y feat: client-side validation C chore: upgrade eslint X feat: login form B (shared) A (shared) This is honest history — it records exactly what happened: parallel development that was joined at a specific point. But it's also noisy history — the merge commit has no meaningful changes, and the log interleaves commits that weren't conceptually related. Strategy 2: git pull --rebase With --rebase , Git takes a different approach. It: Temporarily sets aside your local commits ( X , Y ) Fast-forwards your branch to the tip of the remote ( D ) Replays your commits on top, one by one, creating new commits ( X' , Y' ) The git log reads: Y' feat: client-side validation X' feat: login form D fix: timeo

They’re much more recyclable than the current plastic ones, and they will still probably be locked away behind that anti-theft plexiglass.

Ask a language model to score a developer portfolio out of 100 and you get a confident number back. Hand it a near-empty page with a name and a broken avatar, and it will often still tell you something like 92. Nice layout. Strong personal branding. The model is being polite, not accurate. That was the first wall I hit building Leon, the reviewer inside getfolio. If the score is not trustworthy, nothing downstream matters: the critique, the suggestions, and the fix button all hang off a number the model invented to sound encouraging. This is the build log of how I stopped letting the model hold the pen. Short version: a deterministic rules engine owns the score, and the language model only owns the words around it. The failure mode: an LLM judge wants to be liked If you have shipped anything with an LLM evaluator you have probably seen this. You hand it a rubric, a JSON schema, even worked examples, and it still drifts upward. Empty inputs get encouraging scores. Weak inputs get the benefit of the doubt. Strong inputs land in the same band as the weak ones, just with longer praise. A few reasons, roughly in order of how much they hurt: Tuning rewards a helpful, encouraging tone. Harsh scoring reads as unhelpful, so the model softens it. The model has no ground truth for what a 70 versus an 85 looks like in your specific domain. It is scoring on vibes. Scoring and explaining are entangled. The model writes the kind explanation first, then picks a number to match the nice things it just said. Run it twice on the same input and you get two different numbers. There is no anchor. For a portfolio reviewer that real recruiters and developers would act on, that was a non-starter. If Leon says 64, an empty page should not be able to reach 64 by accident, and a strong portfolio should not get talked down to it either. The number has to mean something. The fix: rules engine owns the score, model owns the language The architecture splits responsibilities hard. A deterministic e

If you're shipping a commercial WordPress plugin, sooner or later you'll need a licensing system. Something that lets paying customers activate the plugin on their site, locks it to that domain, and stops people from sharing the same key across fifty sites. The default answer in the WordPress world is Freemius or EDD Software Licensing. They're great. They're also a revenue share, a third-party dependency, and a black box you don't control. When we built RideCab WP , a commercial WooCommerce taxi booking plugin, we decided to build our own. Here's the architecture, the code, and the gotchas we hit along the way. What a Licensing System Actually Needs to Do Before writing any code, get clear on the requirements. A real plugin licensing system needs to: Generate unique license keys when someone buys Let the customer activate the key on their site Bind that key to one (or N) domains Validate the key periodically so revoked or expired keys stop working Handle deactivation when a customer moves to a new domain Fail gracefully — never lock a paying customer out because your license server hiccuped Optionally: deliver plugin updates only to valid license holders We'll cover 1 through 6 in this post. Update delivery is a separate beast and I'll write it up next. The Architecture The system has two halves that live in two different places. The license server runs on your own infrastructure — for us, it's a WordPress must-use plugin (mu-plugin) on the same WordPress install that powers our marketing site. It: Stores license keys in a custom database table Exposes a small REST API for activate, deactivate, and validate calls Provides an admin dashboard to view, create, and revoke keys The client is a PHP class shipped inside the commercial plugin (RideCab WP, in our case). It: Adds a license settings page to the plugin Calls home on activation Caches the validation result Re-validates quietly in the background Two pieces, talking over HTTPS, with the customer's domain as the b

json.loads(response) fails at a certain point. You told the model "return JSON only," but it added a ```json markdown code fence around everything. A quick regex strips it — until that regex hits an edge case, and that edge case blows up in production. Since Ollama 0.3.0, passing a JSON schema to the format parameter eliminates this problem at the root. The model's inference itself is constrained by the schema, so no code fences, no explanatory text, no mid-thought artifacts. Just parseable JSON. I ran these tests locally with Gemma4 and Ollama 0.30.7 to see how well it holds up in practice. Why LLM Response Parsing Is Tricky The most common problem when running Ollama locally — without a cloud LLM API — is JSON parsing. Two reasons. First, text generation models are trained toward "natural text." Even if you ask for JSON only, they'll often wrap it in json ... blocks or prepend "Of course! Here is the JSON you requested:" style text. Here's what I reproduced directly: json Input: 'Give me 3 Python tips as JSON with keys: tips (array), difficulty (1-5)' Model output (no format parameter): ```json { "tips": [ "Master the fundamentals first...", ... ] } JSON parse: FAILED Python ' s `json.loads()` can ' t handle the markdown wrapper . The " JSON only " instruction is unreliable in production . Second , speed . I measured the same query both ways : 32 seconds without structured output , 5 seconds with it . More on why below . ## How the Ollama format Parameter Works Ollama ' s `/api/generate` endpoint has a `format` field. Pass a JSON schema object and Ollama applies **constrained decoding** during inference. python import json import urllib.request def ollama_structured(prompt, schema, model="gemma4:e4b"): payload = { "model": model, "prompt": prompt, "format": schema, # ← pass JSON schema object directly "stream": False, "options": {"temperature": 0} } data = json.dumps(payload).encode() req = urllib.request.Request( " http://localhost:11434/api/generate ", data=data

🚀 Technical Briefing: This tutorial is part of our deep-dive series on Agentic Workflows at Gate of AI . For the full technical breakdown, interactive code sandbox, and the native Arabic translation, visit the original article here . <span>Tutorial</span> <span>Advanced</span> <span>⏱ 45 min read</span> <span>© Gate of AI 2026-06-16</span> Learn how to fine-tune large language models (LLMs) to enhance communication capabilities in specialized domains, such as homeless shelters, using modern AI tools and techniques like LoRA. Prerequisites Python 3.10+ OpenAI API key (latest version) Familiarity with machine learning concepts What We're Building In this tutorial, we will embark on a journey to fine-tune a large language model (LLM) to cater to the specific communication needs of homeless shelters. By leveraging a bespoke dataset compiled from the Youth Spirit Artworks (YSA) Tiny House Empowerment Village website, we aim to create a model that can effectively assist in the nuances of communication required in such environments. The finished project will result in a model capable of generating contextually relevant and empathetic responses to inquiries typical within the homeless shelter community. This involves structuring data into a standardized question-and-answer format to enhance the training process, ensuring the model's outputs are aligned with the communication style and needs of the target audience. Setup and Installation To begin, we need to set up our development environment with the necessary tools and libraries for model fine-tuning. We'll be using Python along with the OpenAI library to interact with the LLMs. pip install openai pandas numpy Additionally, you'll need to configure environment variables to securely store your API keys. This ensures that sensitive information is not hardcoded into your scripts. .env file OPENAI_API_KEY=your_openai_api_key Step 1: Data Collection and Preparation The first step in fine-tuning our model involves collecting and

Outro dia, vi nos stories do Instagram uma amiga pesquisadora contando que estava usando o Claude para ressuscitar uma plataforma criada anos antes por parceiros. Ela não é da área de desenvolvimento de software. O projeto estava praticamente parado. Não havia mais recurso para manter tudo como estava. Com a ajuda da IA generativa, ela conseguiu migrar serviços, reduzir custo, melhorar performance, redesenhar partes da experiência e voltar a implementar coisas que estavam no backlog havia muito tempo. Achei aquilo inspirador! Mas também um pouco assustador. Não por ela estar usando IA generativa. Pelo contrário: acho fascinante que pessoas que não programam profissionalmente estejam conseguindo recuperar autonomia sobre projetos que antes ficavam dependentes de verba, disponibilidade de terceiros ou uma fila infinita de prioridades. O ponto que me acendeu uma luz amarela foi outro: em certo momento da conversa ela comentou que o projeto tinha dados de usuários e pagamentos via Stripe . Antes de seguir, uma ressalva: eu não gosto muito do termo "vibe coding" . Vou usar o termo aqui porque ele pegou, e porque todo mundo entende mais ou menos o que ele quer dizer: criar software com muita ajuda de IA generativa, muitas vezes sem dominar profundamente a linguagem, o framework ou a arquitetura por trás do projeto. Mas o termo me incomoda porque parece diminuir a responsabilidade envolvida. Se você está criando código, alterando código e colocando esse código no ar, você é sim uma pessoa desenvolvedora. Talvez iniciante. Talvez insegura. Talvez dependente demais da IA generativa. Talvez uma pessoa desenvolvedora ruim ou medíocre, como todos nós somos em algum recorte. Mas é. E isso traz responsabilidades. Vibe coding em uma página pessoal é uma coisa. Vibe coding em um sistema com login, dados pessoais, áreas administrativas, arquivos, integrações externas ou pagamento é outra. E aqui existe uma tensão interessante. Eu trabalho com desenvolvimento de software há bastante