In this quiz, you’ll test your understanding of When Do You Use an Ellipsis in Python? By working through this quiz, you’ll revisit how ... relates to the Ellipsis object, how to use three dots as a placeholder when you write stubs, what they mean in tuple and Callable type hints, and how they short...

Implement an automated CI DevSecOps static security analysis workflow in GitHub Actions using sandboxed Agent Skills that outputs standard SARIF reports for native GitHub Code Scanning integration. Continue reading Automating DevSecOps Static Analysis with GitHub Actions and Agent Skills on SitePoin...

We are announcing a new Crystal release 1.21.1 with important security patches, and a regression fix for macOS. See the release notes of 1.21.0 for all the changes introduced in Crystal 1.21. Pre-built packages are available on GitHub Releases and our official distribution channels. See crystal-lang...

Yesterday, I received this email as a response to You Can't Vibe Code Love. It's such a remarkable and powerful statement that I asked permission to share it here, in its entirety, with personal information redacted:Hey Jeff,Hope you and your family are doing well.

Introduction On the 24th of September, I participated in the 9th edition of DevTalks Cluj-Napoca, and since I had a really great time attending this conference, I decided to share what I learned from attending sessions and having conversations with both speakers and participants. DevTalks DevTalks r...

Describe the interface you need in plain English, then let the agent build a live surface you can both use and update—so you spend less time adapting to tools and more time getting work done. The post GitHub Copilot app for Beginners: How to build custom workflows with canvases appeared first on The...

The new AG-UI .NET SDK enables .NET services to expose and consume interoperable agent endpoints using Microsoft.Extensions.AI. The post AG-UI Protocol now has a first-class .NET SDK appeared first on .NET Blog.

S&P Global's goal was to fundamentally improve how customers discover and consume...

The Primer Design System powers many of the experiences you see on GitHub today. From buttons to banners to breadcrumbs, these foundational components are required to be accessible, flexible, and performant across a wide variety of scenarios. Back in 2023, the number of components on certain pages b...

A look at how a design system shipped major changes without breaking the world. The post Improving site performance by shipping more CSS appeared first on The GitHub Blog.

Seven AI models read the same ticket and reached the same answer. They were all wrong. The ticket said add a 30-second timeout, so they wrote a 30-second timeout. The engineer … The post What we learned running seven AI coding models on real production work appeared first on Hostinger Blog.

Build a resilient Node.js supervisor daemon for background AI agents using worker threads, child process isolation, IPC heartbeats, and rate limiting. Continue reading Node.js Multi-Agent Task Supervision: Process Isolation and Heartbeats on SitePoint.

Architect a tiered local memory system for AI agents using TypeScript, better-sqlite3, and sqlite-vec across episodic, semantic, and procedural stores. Continue reading Building Multi-Tier AI Agent Memory with TypeScript and SQLite-vec on SitePoint.

Learn how to calibrate Gemini 3.8 Flash reasoning effort in TypeScript to balance latency SLAs, token budgets, and dynamic fallback cascades. Continue reading Gemini 3.8 Flash Reasoning Effort: Balancing Latency and Costs in TypeScript on SitePoint.

Trying to figure out what the interloper was trying to. The post Debugging walkthrough: Access violation on nonsense instruction, episode 3 appeared first on The Old New Thing.

With 78% of marketers using email as part of their multichannel strategy, it’s no surprise that inboxes are crowded with competing promotions during Cyber Week. Getting your send … The post Best time to send Black Friday emails in 2026 appeared first on Hostinger Blog.

Misconfiguring Turnstile by skipping backend validation leaves sites exposed to bots. Turnstile Spin fixes incomplete setups by using your preferred AI coding agent to wire up server-side verification.

What Agent Experience engineering means in practice: discoverable code paths, scoped agent instructions, useful feedback, and human ownership of risky decisions. Read more

As a delivery lead, data-layer troubleshooting has historically been developer work: SQL fluency, comfort operating in a production database, and the confidence to investigate without breaking anything. For an accounting-based client, when their data didn’t reconcile or make sense, that question wen...

In this quiz, you’ll test your understanding of Jupyter Notebook: An Introduction. Jupyter Notebook is an open source web application that lets you create and share documents containing live code, equations, visualizations, and text. It’s a staple of data science work, and it’s just as useful for te...

How should you manage AI contributions to an open-source project? How do you measure the impact of using AI tools for development, and what generative features do end users want from a content management system? This week on the show, we speak with Thibaud Colas and Meagen Voss from Wagtail about th...

A 20-byte sensor reading costs 95.6 on disk. Measure bytes per row, project 631 billion rows, and test your ingest ceiling before the schema review.

Decide with Jev is a new mini course where we build an app that checks if a draft does what its brief asked for. It uses Jev, an AI model from TypeSafe that answers with a number instead of text. In episode 1 we set it up and test it: a complete draft scores 0.96, and a thin one scores 0.02. The pos...

Ryan chats with David Burns, Head of Developer Advocacy and Open Source at BrowserStack, about the value of professional skepticism in an AI-driven world, applying test-driven development to agentic engineering, and why fixing flaky tests comes down to managing application state.

I know it's not nice to mock mistranslations, but would you believe we're laughing with them, not at them? In response to recent criticism of the difficulty of identifying precisely what is at issue, two of our readers have chosen to highlight the offending element. Thanks for saving me the trouble!...

Coming to Python Pandas from NumPy? You’ll reach for np.isnan: Unfortunately, this works. Better, use s.isna (or s.isnull). But the best way to drop NaN? Use dropna: The post Pandas dropna: The best way to remove NaN values from a series appeared first on LernerPython.