Computer Science and Programming

16 April 2026 16:45

Open source security at Astral

Astral shares the security practices they use to protect their open source tools (Ruff, uv, ty) from supply chain attacks. Key areas covered include: hardening GitHub Actions CI/CD by banning dangerous triggers like pull_request_target, pinning all actions to commit SHAs, limiting permissions, and isolating secrets in deployment environments. For releases, they use Trusted Publishing to eliminate long-lived credentials, Sigstore-based attestations, immutable releases, and two-person approval gates. They also use GitHub Apps to safely handle tasks that GitHub Actions can't do securely, maintain dependency hygiene with Dependabot/Renovate plus cooldowns, and contribute financially and technically to upstream projects. The post includes shareable GitHub rulesets and practical recommendations for other maintainers.

Computer Science and Programming

13 April 2026 19:35

Chrome for Developers

Chrome 147 introduces three notable features for web developers. Element-scoped view transitions expose startViewTransition() on arbitrary HTML elements, enabling concurrent and nested transitions while keeping the rest of the page interactive. The new CSS contrast-color() function automatically returns black or white based on which provides higher contrast against a given color, aiding accessibility compliance. The CSS border-shape property allows creating non-rectangular borders using arbitrary shapes like polygons, circles, or shape() values, differing from clip-path by decorating the border rather than clipping the entire element.

Computer Science and Programming

12 April 2026 17:35

Baton: Orchestrate your AI coding agents

Baton is a desktop app for orchestrating multiple AI coding agents in parallel. Each agent runs in its own git-isolated workspace, with smart notification badges to flag which agents need attention. It supports Claude Code, Codex, OpenCode, and any terminal-based agent. Features include diff review, file browsing, codebase search, and a built-in MCP server that lets agents spawn new agents. Built by a developer who needed a single unified interface to manage multiple agents without constant window-switching.

Computer Science and Programming

10 April 2026 09:59

Sorting algorithms

Simon Willison used Claude Artifacts on his phone to build interactive animated demonstrations of common sorting algorithms (bubble sort, selection sort, insertion sort, merge sort, quick sort, heap sort). He then prompted Claude to add Python's Timsort by cloning the CPython repo from GitHub and consulting the source files. A 'run all' button was added to display all algorithms simultaneously in a grid. Notably, when GPT-5.4 Thinking reviewed Claude's Timsort implementation, it found it to be a simplified, Timsort-inspired adaptive mergesort rather than a true Timsort.

Computer Science and Programming

09 April 2026 11:16

Agent responsibly

Coding agents generate convincing code fast, but passing CI doesn't mean code is safe for production. There's a critical difference between leveraging AI (maintaining full ownership and understanding of output) versus relying on it (shipping whatever the agent produces). The scarce resource is no longer writing code — it's judgment about what's safe to ship. A responsible framework includes self-driving deployments with automatic rollback, continuous validation through load tests and chaos experiments, and executable guardrails that encode operational knowledge as runnable tools rather than documentation. Engineers who thrive will be those who maintain rigorous judgment over what they ship, not those who generate the most code.

Computer Science and Programming

08 April 2026 13:25

GitHub - dexter-xD/Kivo: A minimal, fast, and modern desktop HTTP client built with Rust and Tauri

Kivo is an open source, cross-platform desktop HTTP client built with Rust and Tauri, offering a lightweight alternative to tools like Postman. It features collection and workspace management, tabbed request editing, GraphQL support, history tracking, and dark/light mode. The frontend uses React 19, Vite, and Tailwind CSS. Installation requires Node.js, pnpm, and the Rust toolchain.

Computer Science and Programming

06 April 2026 22:14

Migrate from Cursor to IntelliJ IDEA

JetBrains outlines the benefits of migrating from Cursor to IntelliJ IDEA, highlighting IntelliJ's native AI capabilities, out-of-the-box configuration, and enterprise-ready features. The guide covers how to import settings and recreate familiar workflows, positioning IntelliJ IDEA as a more scalable solution for both beginners and professional developers working on complex projects.

Computer Science and Programming

06 April 2026 00:15

Test IDs are an a11y smell

Using data-testid attributes in tests is an accessibility smell because users can't see or interact with test IDs. Role-based selectors (via Testing Library or Playwright) are superior because they mirror how real users interact with apps, catch inaccessible markup like clickable divs lacking semantic roles, and provide implicit a11y testing. If a role-based selector can't find an element, that's a signal the UI itself is inaccessible. Practical tips include using semantic HTML for implicit ARIA roles, associating form labels, using headings and landmarks, leveraging Testing Playground, and navigating with the keyboard to catch issues.

Computer Science and Programming

04 April 2026 23:05

Visual Studio Code 1.114

VS Code 1.114 release notes covering two updates: pinned chat sessions now display a pin icon indicator in the sessions list, and a new `${taskVar:name}` variable allows capturing dynamic values from a task's problem matcher output for use in launch configurations.

Computer Science and Programming

04 April 2026 14:59

Astro 6.1

Astro 6.1 ships several improvements: codec-specific Sharp image defaults let you configure JPEG, WebP, AVIF, and PNG encoding once in your Astro config instead of per-image. SmartyPants now supports full configuration for non-English typographic conventions like French guillemets and German quotation marks. The i18n fallback routes are now exposed to integrations via the `astro:routes:resolved` hook, and

Astro 6.1 ships sevautomatically includes these fallback pages. Additional fixes include smoother mobile view transitions (skipping animations during native browser swipe gestures), a Vite 8 compatibility warning, React hydration bug fixes, and correct CSRF origin checking behind TLS-terminating reverse proxies.

Computer Science and Programming

03 April 2026 10:07

kdwarn: Introducing pgtui, a Postgres TUI client

pgtui is a Postgres TUI client written in Rust that lets users interact with a PostgreSQL database from the terminal. Built with ratatui, sqlx, and the toml crate, it supports browsing relations, paginated data viewing, sorting, filtering with WHERE clauses, inserting and editing records via a terminal editor, deleting records, multi-column primary key support, and managing multiple database connections. The project originated from the idea of writing content in TOML/markdown and storing it in a database.

Computer Science and Programming

01 April 2026 10:46

The Avalonia WebView Is Going Open-Source

Avalonia is open-sourcing its WebView control as part of the upcoming Avalonia 12 release. Previously a commercial-only feature in the Accelerate tier, the WebView uses native platform web rendering instead of bundling Chromium. The decision reflects that embedding web content has become a standard requirement, making a commercial license feel inappropriate. Existing Accelerate subscribers retain full support, and the commercial offering continues with other advanced tooling and components. The open-source WebView will ship in an Avalonia 12 pre-release and be included in the stable release.

Computer Science and Programming

30 March 2026 21:25

Video.js v10 Beta: Hello, World (again)

Video.js v10.0.0 beta is a ground-up rewrite merging Video.js, Plyr, Vidstack, and Media Chrome into a single modern framework. Key highlights include an 88% reduction in default bundle size (66% even without ABR), a new composable streaming engine called SPF that enables much smaller adaptive bitrate bundles, first-class React and TypeScript support, unstyled UI primitives inspired by Radix/Base UI, and a shadcn-style skin ejection system. The architecture is fully composable — unused features are tree-shaken out. Three presets ship with the beta: video, audio, and background video. New skins were designed by Plyr's creator Sam Potts. GA is targeted for mid-2026, with migration guides for Video.js v8, Plyr, Vidstack, and Media Chrome planned before then.

Computer Science and Programming

28 March 2026 09:52

Meet Kit, your companion for a new internet era

Mozilla has introduced Kit, a new visual mascot and companion character for Firefox. Kit is a fox-like creature (drawing from both fox and red panda attributes) designed to appear in welcoming or encouraging moments within the browser, on Mozilla's website, blog, social media, and community events. Created by illustrator Marco Palmieri in partnership with agency JKR, Kit was deliberately hand-crafted — not AI-generated — with distinctive design choices like no mouth and an expressive tail. Kit is not an AI assistant or chatbot, but a brand character meant to make Firefox's user-first, privacy-respecting values feel more visible and approachable.

Computer Science and Programming

26 March 2026 16:35

Revisiting HTML streaming for modern web performance

HTML streaming allows servers to send HTML progressively rather than in one chunk, enabling browsers to render content as it arrives. HTMS is an experimental project that extends basic streaming with progressive placeholders that can be updated asynchronously within a single HTTP response. This approach delivers early First Contentful Paint, maintains SEO-friendly complete HTML documents, and achieves strong Lighthouse scores without client-side hydration. The technique works best combined with SSR, SSG, or tools like HTMX, though it introduces constraints around error handling once streaming begins and requires careful layout planning.

Computer Science and Programming

15 April 2026 18:04

How We Developed Zeta2 — Zed's Blog

Zed's team details how they built Zeta2, their improved edit prediction model. Key improvements include richer input context (finer-grained edit history, LSP-resolved type/symbol definitions), a switch from Qwen 2.5 Coder (7B) to Seed Coder (8B) as the base model, and a knowledge distillation pipeline using Claude Sonnet as the teacher model. They addressed the 'reversal problem' where the model incorrectly deleted intentional user edits by improving teacher prompting and edit granularity. Training data shifted from synthetic GitHub commit examples to opt-in real user traces from open source repos, yielding ~250-300k training requests per week. The result is a 30% better acceptance rate and faster responses, validated through dogfooding, shadow releases, and gradual rollout.

Computer Science and Programming

12 April 2026 19:24

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WhatsApp Computer Science and Technology

We welcome you all to be part of this family

Computer Science and Programming

10 April 2026 13:05

I used AI. It worked. I hated it.

A developer with strong anti-genAI views shares their experience using Claude Code to build a certificate generation tool for a learning platform migration. The project succeeded — the Rust/Svelte app is in production — but the process felt miserable. Key observations: TDD with plan-mode kept the model on track, Rust's compile-time safety helped catch hallucinations, a security audit pass found real vulnerabilities (path traversal, timing side-channel in Argon2), and the tool delivered features the author wouldn't have built alone. Despite the functional success, the author warns about the 'human in the loop' problem — the process actively encourages disengagement — and reflects on cognitive dependency, skill atrophy for junior developers, IP theft concerns, and the broader societal harms. The conclusion is nuanced: it works in this narrow domain, the harms still outweigh benefits at scale, but condemning individuals for using it is counterproductive.

Computer Science and Programming

09 April 2026 16:08

Moving Railway's Frontend Off Next.js

Railway migrated its entire production frontend from Next.js to Vite + TanStack Router, completing the switch in just two PRs with zero downtime. The motivation was slow builds (10+ minutes, 6 of which were Next.js), heavy reliance on client-side patterns that didn't fit Next.js's server-first model, and hacky layout workarounds on the Pages Router. The migration was split into two phases: first removing all Next.js-specific APIs, then swapping the framework and generating 200+ routes from the original page tree. Nitro was added as the server layer, consolidating redirects, headers, and caching. Results include builds under 2 minutes, instant dev server startup, type-safe routing, and first-class layouts. Trade-offs include losing built-in image optimization (replaced with Fastly) and ecosystem tools like next-seo (replaced with in-house equivalents). TanStack Start's relative immaturity is acknowledged but accepted.

Computer Science and Programming

08 April 2026 21:11

Explore union types in C# 15

C# 15 introduces the `union` keyword in .NET 11 Preview 2, allowing developers to declare a closed set of case types with compiler-enforced exhaustive pattern matching. Unlike object, marker interfaces, or abstract base classes, union types don't require related types and prevent external extension. The compiler generates a struct with implicit conversions from each case type and astruct wiproperty. Switch expressions over union types are exhaustive without needing a discard arm, and adding a new case type triggers compiler warnings on incomplete switches. Custom union types are also supported via amarker inteattribute for existing libraries, including a non-boxing access pattern for performance-sensitive scenarios. Related proposals for closed hierarchies and closed enums round out a comprehensive exhaustiveness story for C#.

Computer Science and Programming

08 April 2026 08:23

The Claude Code Leak

The accidental leak of Claude Code's source code reveals that the code itself is reportedly low quality, yet the product is beloved. This prompts reflection on five key observations: code quality doesn't determine product success; what matters is what code does, not how it's written; product-market fit trumps implementation details; the copyright situation is ironic given Anthropic's own AI training arguments; and ultimately the leak won't matter because Claude Code's value lies in the seamless integration of model and harness, not the underlying source code. Open-source alternatives like Codex and Gemini CLI haven't captured Claude Code's mindshare, reinforcing that a complete, well-integrated service is what users pay for.

Computer Science and Programming

06 April 2026 05:15

Coding Club

Brad Frost visits his daughter's after-school coding club to share his passion for web development. He demos browser DevTools tricks on Minecraft's website, shows his daughter's vibe-coded game, and builds a live interactive webpage using JSON data collected from the kids in real time. The post reflects on the joy of sharing the magic of coding with children, free from professional jargon and business concerns.

Computer Science and Programming

05 April 2026 21:10

404 Deno CEO not found

A developer who invested heavily in Deno reflects on the company's recent mass layoffs and broader decline. The post traces Deno's trajectory from its $4.9M seed round and $21M Series A through failed products like Deno Deploy and JSR, arguing that the ecosystem never captured enough developer interest. Key criticisms include inconsistent Deploy performance, confused packaging strategy (HTTP imports vs package.json), and JSR's failure to gain traction compared to alternatives like NPMX. The author speculates about a possible AI pivot or OpenAI acquisition and calls on CEO Ryan Dahl to communicate what comes next for the runtime.

Computer Science and Programming

04 April 2026 20:05

What’s new in Svelte: April 2026

April 2026 brings several improvements to Svelte and SvelteKit. Highlights include Svelte MCP integration with OpenCode via the sv CLI, support for functions in svelte.config.js for css/runes/customElement options, new exported types from svelte/motion (TweenOptions, SpringOptions, etc.), server-side error boundary support in SvelteKit, and improved type narrowing for page/layout params with matchers. The community showcase features a range of apps, learning resources, and new libraries built with Svelte

Computer Science and Programming

03 April 2026 15:10

Simplifying Containers with Cloudflare Sandboxes

Kent C. Dodds shares how he replaced a Cloudflare Container-based FFmpeg audio pipeline with Cloudflare Sandboxes, eliminating heartbeat/shutdown coordination plumbing. The new design uses a one-shot sandbox.exec() call directly from the queue worker, keeping R2 credentials in the worker and passing only presigned URLs to the sandbox. The sandbox image is minimal: base Cloudflare sandbox image plus FFmpeg and a shell script. Two production bugs surfaced post-merge — a sandbox ID length limit (63 chars max) and a broken Dockerfile that replaced the required Cloudflare sandbox runtime with a plain Debian base. Both were diagnosed and fixed with help from a Cursor agent and the Cloudflare MCP server. The entire migration, including two PR iterations, took under an hour of the author's own time.

Computer Science and Programming

01 April 2026 15:50

My OpenClaw Token Dashboard · March 2, 2026

A developer built a static Astro dashboard to track AI assistant token usage and costs across Discord threads, cron jobs, and projects. By parsing JSONL session logs with a Node.js script, they discovered two Discord threads accounted for 60% of total spend. The key insight: long-running Discord threads act as context traps, accumulating conversation history and inflating costs. The fix involves starting fresh threads per topic, using sub-agents for isolated tasks, and treating catch-all channels as lobbies rather than workspaces.

Computer Science and Programming

31 March 2026 01:32

How passkeys work

A beginner-friendly explainer on how passkeys work using public/private key cryptography, where a private key stays on your device and a public key is shared with the website. Covers the core handshake mechanism, compares passkeys to passwords and password managers, and offers a measured take on their real-world trade-offs — including device dependency and phishing resistance — without overselling them as a universal solution.

Computer Science and Programming

29 March 2026 19:13

Prompt Engineering as a Developer Discipline

Structured prompting is becoming a crucial skill for developers, akin to traditional coding practices. Using AI effectively involves treating prompts as modular, testable components within software systems. Techniques like few-shot prompting, chain-of-thought reasoning, self-consistency, skeleton prompting, and configuration parameters improve AI's coding outputs. Developers should rigorously validate and maintain prompts, just like any other code, to ensure reliability and consistency in AI-powered features.

Computer Science and Programming

26 March 2026 19:35

Room 3.0 - Modernizing the Room

Room 3.0 alpha has been released, marking a major breaking version of the Android database library. Key changes include dropping SupportSQLite APIs in favor of SQLiteDriver, exclusive Kotlin code generation (no more Java), dropping KAPT/annotation processing in favor of KSP only, and making coroutines mandatory for DAO functions. Room 3.0 adds Kotlin Multiplatform support for JavaScript and WebAssembly via a Web Worker-based SQLite driver using the Origin Private File System. The library moves to a new Maven package (androidx.room3). A new @DaoReturnTypeConverter annotation enables custom DAO return types. Room 2.x enters maintenance mode with only bug fix releases planned until Room 3 stabilizes. Migration paths include adopting SQLiteDriver APIs in Room 2.7+ and using the new room-sqlite-wrapper compatibility artifact.

Computer Science and Programming

26 March 2026 14:32

Chrome for Developers

Chrome 146 introduces three notable features for web developers. Scroll-triggered animations enable declarative CSS-based control of animations based on scroll position, replacing common JavaScript-based scroll detection patterns. Scoped custom element registries allow multiple custom element definitions for the same tag name within a page, preventing naming conflicts when using libraries from multiple sources. The Sanitizer API provides a built-in way to strip script-executing content from user-supplied HTML, making it easier to build XSS-free web apps — this updated version is also available in Firefox.