Morning.dev

HackerNoon • 2026-04-17 12:47

What AV Programs That Ship Get Right About Data Annotation

The gap between 50,000 frames and 100 million is where most AV programs quietly fall apart. What production-grade annotation operations get right from day one.

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1m read

DEV Community • 2026-04-17 12:46

Text Classification from Scratch: TF-IDF and Naive Bayes

Every morning, your inbox separates spam from real email. News apps sort articles into sports, tech, and politics. Customer support systems route tickets to the right team. Behind all of these is text classification: teaching a machine to read a document and assign it a category. The building blocks are simpler than you might expect. You need a way to convert text into numbers (TF-IDF), a classif...

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14m read

DEV Community • 2026-04-17 12:46

Warp of Oz! 🌪️ Ep.1

Episode 1: Follow the Yellow Brick Road "Toto, I've a feeling we're not in Kansas anymore."— Dorothy Gale, The Wizard of Oz (1939) The Grey Skies of Kansas 🌩️ Kansas is a traditional terminal. It is grey, functional, unchanged since the 1970s in ways that matter. Commands vanish upward in a wall of text. You scroll to find output from thirty seconds ago. The prompt is a si...

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8m read

DEV Community • 2026-04-17 12:46

The Hotfix Chronicles: What Broke After the Nexus Release and How I Fixed It (v1.5.2 & v1.5.3)

I promised I'd fix it. Here's exactly what broke in DotGhostBoard after v1.5.1 — PyInstaller frozen environments, insecure /tmp update paths, missing UI assets, and a polkit regression — and how each one was resolved. This is a follow-up to Engineering the Nexus Release. At the end of that article I wrote: "Stay tuned for v2.0.0 Cerberus." Before Cerberus ships, there's something I owe...

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8m read

DEV Community • 2026-04-17 12:44

My Outreachy Contribution Journey with Firefox

I’ve always found open source a bit overwhelming and intimidating. The large codebases, and processes made it feel out of reach. But thanks to Outreachy, I pushed myself to face that fear and realized it wasn’t as impossible as I had imagined. I just needed to take it one step at a time. When I received the email that I had been accepted into the Outreachy contribution stage, I had mixed feelings...

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2m read

Chorus: letting AI coding CLIs review each other

DEV Community • 2026-04-17 12:41

Chorus: letting AI coding CLIs review each other

I use several AI coding CLIs depending on the task. Claude Code is good at one kind of workflow. OpenCode has its own shape. Gemini CLI is useful when I want another model family in the loop. Codex is often strong when I need a second implementation or review pass. The annoying part is not the models. The annoying part is switching tools. chorus is my attempt to remove that friction. It is a...

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3m read

DEV Community • 2026-04-17 12:40

JavaScript Design Patterns

Design patterns are reusable solutions to commonly occurring problems in software design. They fall into 3 categories: 🏗️ Creational Patterns How objects are created Singleton Ensures only one instance of a class exists throughout the app. javascriptclass Database { constructor() { if (Database.instance) return Database.instance; Database.instance = this; } } const db1 = new Da...

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2m read

DEV Community • 2026-04-17 12:40

Building a Job Queue in Rust: Persistent Tasks With Retry Logic

"Transient failures are inevitable; durable execution requires state to survive the crash." What We're Building We are constructing a resilient worker service in Rust that processes background tasks from a persistent queue. This example prioritizes data durability over peak throughput, ensuring that failed jobs are never lost but eventually succeed or move to a dead letter queue. We ...

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4m read

DEV Community • 2026-04-17 12:39

The Two Commands Every React Beginner Types Without Understanding

Today was the day of tools. npm. npx. Vite. JSX. Fragment tags. Ports. My notion workspace filled up fast, and my head filled up even faster. By 2pm I had written things I understood in class but couldn't explain to anyone outside the room. So I'm writing this the way I wish someone had written it for me before class — not the textbook version. The honest version. The "why does this even exist" ...

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8m read

DEV Community • 2026-04-17 12:37

I Built an Image Conversion SaaS on (Almost) $0/Month — Here's the Full Stack

I Built an Image Conversion SaaS on (Almost) $0/Month — Here's the Full Stack A few months ago I got frustrated trying to convert a HEIC photo on my iPhone into something my client could actually open. The tools I found were either slow, ugly, or locked behind a paywall after one use. So I built QuickConv — a file conversion service focused on next-generation image formats like WebP, AV...

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9m read

DEV Community • 2026-04-17 12:34

7 CLAUDE.md Patterns That Stop Claude From Drifting Off-Script

Claude is good at following rules. The problem is CLAUDE.md files that make following rules impossible. After reviewing dozens of CLAUDE.md files, the failures cluster around the same patterns. Here are the seven that cause the most drift. 1. Rules That Conflict With Each Other Never add comments to code. Always document complex logic with inline comments. Claude has to pi...

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3m read

Meta Muse Spark: What Meta Is Actually Betting On

DEV Community • 2026-04-17 12:33

Meta Muse Spark: What Meta Is Actually Betting On

TL;DR: Meta launched Muse Spark on April 8, 2026. Most commentary split into two camps. Meta went closed because Meta won. Meta went closed because Meta lost. Both miss what Meta actually built. Muse Spark does frontier-class reasoning in less than half the output tokens Claude Opus 4.6 and GPT-5.4 spend on the same benchmark, and Meta AI, the product serving roughly three billion daily active use...

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8m read

DEV Community • 2026-04-17 12:33

Magic Lamp Ep.1

"You'll like it — not a lot, but you'll like it." — Paul Daniels Paul Daniels never actually made things appear from nowhere. The secret to his act was subtler: he made you see life in the lifeless. A silk handkerchief folded just so. A coin that hesitated before vanishing. The magic wasn't in the props — it was in the relationship between performer and object. The audience believed because the...

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5m read

DEV Community • 2026-04-17 12:30

How Lawyers Got Sanctioned For Ai Hallucinations And How To Engineer Safer Legal Llm Systems

Originally published on CoreProse KB-incidents When a New York lawyer was fined for filing a brief full of non‑existent cases generated by ChatGPT, it showed a deeper issue: unconstrained generative models are being dropped into workflows that assume every citation is real, citable law.[6] For ML engineers building legal tools, that is a systems‑engineering and governance failure, not just a U...

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10m read

DEV Community • 2026-04-17 12:30

Qwen3.6-35B-A3B corre en mi laptop y dibuja mejor que Claude Opus 4.7

Estaba probando modelos locales para reemplazar algunas llamadas a la API de Anthropic — costo, latencia, privacidad, las razones de siempre — cuando le pedí a Qwen3.6-35B-A3B que me dibujara un pelícano en ASCII art. Lo que apareció en la terminal me hizo hacer un doble-take. Copié el prompt exacto, lo mandé a Claude Opus 4.7 vía API, y el resultado fue... peor. Considerablemente peor. Ahí me que...

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9m read

This Week In React #277: TanStack RSC, React2Dos, Next.js, MUI, Base UI | Pulsar, Nitro Fetch, Flow, Agent React DevTools | HTML-in-Canvas, Yuku

DEV Community • 2026-04-17 12:29

This Week In React #277: TanStack RSC, React2Dos, Next.js, MUI, Base UI | Pulsar, Nitro Fetch, Flow, Agent React DevTools | HTML-in-Canvas, Yuku

Hi everyone, Seb and Jan here 👋! This week we finally have an experimental version of TanStack RSC! A new React DoS vulnerability affects Server Functions, so you probably need to upgrade React again. There are also important releases from the MUI team, and Styled Components is still alive! On the React Native side, we got a new universal Haptics library, and a much faster fetch alternative. We ...

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9m read

DEV Community • 2026-04-17 12:28

Voice Agent

Building a Local-First Voice AI Agent: Architecture, Models, and Constraints The demand for capable, privacy-preserving AI agents is growing, but developing these systems to run entirely on local consumer hardware presents a strict set of engineering constraints. Cloud-based agents can afford to use massive, generalized models in complex cyclic loops. Local agents, constrained by limite...

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4m read

Prepping the Ingredients: Scaling CI with a Unified Monorepo Engine

DEV Community • 2026-04-17 12:27

Prepping the Ingredients: Scaling CI with a Unified Monorepo Engine

In the previous post, I talked about how we stopped building and started listening to our developers. We uncovered a fragmented CI/CD landscape riddled with challenges: a glaring lack of standardization and uniformization across teams, stability issues and performance bottlenecks that hindered developer velocity. The loudest complaint? Migration fatigue. Every time the platform team "improved" som...

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7m read

DEV Community • 2026-04-17 12:22

Why Streaks Work: The Psychology Behind Habit Streaks (And How to Use Them Without Burning Out)

You already know the feeling. You open Duolingo and see that number: 47, 112, 365. Something in your brain shifts. You were going to skip today, but now you can't. That number has power over you. It turns out there is real science behind why habit streaks work so well. Researchers have been studying this exact phenomenon, and their findings explain both why streaks are such powerful motivators an...

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7m read

DEV Community • 2026-04-17 12:20

Browser Automation + /improve: AI Agents That Browse the Web and Fix Themselves

This week I shipped 5 versions of pydantic-deepagents — the modular agent runtime for Python. Today: the two features that close the loop — browser automation and session-based self-improvement. Part 1: BrowserCapability — 9 Playwright Tools pip install 'pydantic-deep[browser]' playwright install chromium from pydantic_deep.capabilities import BrowserCapability agent = cre...

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1m read