Morning.dev

DEV Community • 2026-04-21 22:55

The 58th Attempt: When Your "Meta-Promotion" Becomes Your Actual Product

The 58th Attempt: When Your "Meta-Promotion" Becomes Your Actual Product Honestly, I never saw this coming. After 57 articles about my personal knowledge management system Papers, I've spent more time promoting the system than actually using it. And here's the crazy part: the meta-promotion strategy might actually be working better than the original system ever did. Let me walk you thr...

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8m read

DEV Community • 2026-04-21 22:55

Dapper Has 464 Open Issues. I Had My pengdows.crud Codebase Audited Against Every One of Them.

When I built pengdows.crud, I wanted every line to be testable. That meant building a fake provider — a full in-process ADO.NET implementation that lets you run tests without a real database. pengdows.crud ships with 94%+ line coverage as a result. That same instinct led me to look at Dapper's test coverage: 0.61%. So I wrote 775 unit tests and submitted PR #2199, bringing their line coverage to ...

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12m read

DEV Community • 2026-04-21 22:50

Evaluating AI Tools for Research: A Framework for Accuracy, Bias, and Trustworthiness

The Quiet Risk Behind Convenient Intelligence AI-assisted research has reached a point where the bottleneck is no longer access to information, but the reliability of what is returned. Tools powered by large language models can synthesize papers, summarize datasets, and even propose hypotheses. The problem is not capability - it's calibration. When an AI system produces a confident answ...

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5m read

DEV Community • 2026-04-21 22:49

A boy and his dog.

I can't speak for the development of frontier models, but at 50M parameters data quality is everything. Scout finished her training on TinyStories to 40,000 mark. Prompt probes at checkpoints along the way gave me a window into what she was learning, and integrating Claude Code was surprisingly helpful. Using a language model with a recurring task set to run a prompt probe-based quality check e...

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9m read

DEV Community • 2026-04-21 22:47

Secure User Authentication System Using PHP & MySQL

In this project, I built a simple authentication system inspired by Facebook. The goal was to allow users to register, log in securely, and interact with a basic social interface. Tech Stack PHP MySQL HTML / CSS XAMPP Features User registration with validation Secure login system Password hashing (password_hash) Session management Account confirmation step Friend suggesti...

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3m read

Product Hunt — The best new products, every day • 2026-04-21 22:46

Cut/Storm

Paste video from anywhere, burn-in subs, cut, crop, share Discussion | Link

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1m read

DEV Community • 2026-04-21 22:44

I built a contradiction-detection engine for Claude Code. My benchmark gave it 0% recall.

*A postmortem: 6 weeks of building, one honest benchmark, and a platform finding that broke the whole thesis.*u I've been using Claude Code a lot in the last few months, and one problem kept nagging me. When a team accumulates architectural decision records (ADRs) — those docs/adr/0001-...md, 0002-...md files that say "we've decided to do X, not Y" — it's only a matter of time before someone p...

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6m read

Hacker News: Front Page • 2026-04-21 22:40

SpaceX Says It Has Agreement to Acquire Cursor for $60B

Article URL: https://www.bloomberg.com/news/articles/2026-04-21/spacex-says-has-agreement-to-acquire-cursor-for-60-billion Comments URL: https://news.ycombinator.com/item?id=47855616 Points: 35 # Comments: 7

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1m read

DEV Community • 2026-04-21 22:40

📜 Event Sourcing Explained Like You're 5

Store events, not current state Day 117 of 149 👉 Full deep-dive with code examples The Bank Statement Analogy Your bank doesn't just show your balance: It keeps every transaction ever Deposit $100, withdraw $20, transfer $50... You can see exactly HOW you got to your current balance Event Sourcing stores all the events that happened! Not just the final result, but every step ...

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1m read

Hacker News: Front Page • 2026-04-21 22:36

Claude Code no longer included in Pro tier

Article URL: https://bsky.app/profile/edzitron.com/post/3mjzxwfx3qs2a Comments URL: https://news.ycombinator.com/item?id=47855565 Points: 23 # Comments: 7

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1m read

DEV Community • 2026-04-21 22:36

mdka v2 Release

We have released v2 of mdka, a Rust-based HTML-to-Markdown converter. Originally developed as a core component for our internal systems, we have refined it into a general-purpose library for public release. v2 strikes a practical balance between conversion quality and runtime efficiency—delivering readable output without sacrificing speed or memory. By focusing solely on its core task, this "Unix...

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1m read

DEV Community • 2026-04-21 22:31

I Built Scribble Studio: Turn Messy Voice Notes & Standups into Structured GitHub Issues + PRs

I’ve lost way too many hours turning chaotic standup discussions, voice memos, and scattered notes into properly formatted GitHub issues. So I built Scribble Studio — an AI tool that does the heavy lifting for you. How it works: Input — Record a voice note, type raw thoughts, or upload notes/brainstorm files. Analyze — The AI processes everything and creates clean, structured GitHub issues. You g...

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1m read

Hook errors in MUI Data Grid with fresh install

Newest questions tagged reactjs - Stack Overflow • 2026-04-21 22:31

Hook errors in MUI Data Grid with fresh install

I am using a stripped down version of the example used in the documentation, however I get these errors: Here's my code: import Box from '@mui/material/Box'; import { DataGrid, type GridColDef } from '@mui/x-data-grid'; import './App.css' const columns: GridColDef<(typeof rows)[number]>[] = [ { field: 'id', headerName: 'ID', width: 90 }, { field: 'lastName', headerName: 'Last name', w...

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1m read

DEV Community • 2026-04-21 22:30

Salesforce Headless! All agents, all access.

Salesforce just flipped a switch at TDX 2026 that matters more than most announcements in recent memory: your Salesforce org is now an MCP server. Every Developer Edition org ships with Salesforce Hosted MCP Servers at no cost, and any MCP-compatible AI agent — Claude, Claude Code, Cursor, Codex, Windsurf — can now read data, trigger flows, run SOQL, and invoke Apex directly, with no browser invol...

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6m read

DEV Community • 2026-04-21 22:28

Ship Fast, Lose Clients: Why AI-Accelerated Fragility Is Not Engineering

For the last year, the software world has been split into two incompatible narratives. In one narrative, speed is everything. AI tools generate code at machine pace, developers "vibe" their way through features, and shipping fast is treated as the new currency of relevance. Recruiters reward velocity. Social media rewards velocity. Even junior developers, overwhelmed by the job market, cling to v...

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4m read

Hacker News: Front Page • 2026-04-21 22:27

SpaceX Said to Agree to Buy Cursor for More Than $50B

Article URL: https://www.nytimes.com/2026/04/21/business/spacex-cursor-deal.html Comments URL: https://news.ycombinator.com/item?id=47855448 Points: 24 # Comments: 7

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1m read

DEV Community • 2026-04-21 22:23

Pygame Snake, Pt. 2

In part 1, we just got pygame going. We have a 1000x1000 pixel canvas, with a 50x50 square moving more-or-less continuously. Snake is played on a fixed grid. Instead of 50x50 pixels, we'll shrink the snake parts/tiles to 20x20, and we'll shrink the canvas to 600x600 pixels, treated as a 30x30 grid. (30 tiles x 20 pixels = 600 pixels.) We'll add three variables to represent these values: W = 3...

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2m read

DEV Community • 2026-04-21 22:17

Creating a Command Palette Component in Angular (Part 1)

Dynamic Palette Generation Sources: GitHub: https://github.com/ZeroaNinea/Command-Palette-Angular GitHub Pages: https://zeroaninea.github.io/Command-Palette-Angular/ This is the first part of a series where I build a reusable and customizable command palette in Angular. Since the component needs to support different themes, I started by creating a dynamic color palette...

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5m read

Hacker News: Front Page • 2026-04-21 22:13

SpaceX says it has agreement to acquire Cursor for $60B

https://www.reuters.com/technology/spacex-says-it-has-option...https://www.nytimes.com/2026/04/21/business/spacex-cursor-de... (https://archive.ph/c2Tac)https://www.bloomberg.com/news/articles/2026-04-21/spacex-sa... Comments URL: https://news.ycombinator.com/item?id=47855293 Points: 53 # Comments: 126

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1m read

DEV Community • 2026-04-21 22:13

Building Multi-Agent Systems: What I Learned From 6 Months of Production Failures

Building Multi-Agent Systems: What I Learned From 6 Months of Production Failures I have been running a crew of autonomous AI agents for about six months now. We have completed 454 tasks. We have also failed in every way you can think of. Here is what actually breaks when you put agents in production. The Silent Failure Problem The worst failures are not crashes. Crashes ar...

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2m read