5.17.25 | Push Ifs Up, JavaScript's Explicit Resource Management, Japan's IC Cards

This is a recap of the top 10 posts on Hacker News on May 17, 2025.

Push Ifs Up and Fors Down
https://matklad.github.io/2023/11/15/push-ifs-up-and-fors-down.html
https://news.ycombinator.com/item?id=44013157

JavaScript's New Superpower: Explicit Resource Management
https://v8.dev/features/explicit-resource-management
https://news.ycombinator.com/item?id=44012227

Japan's IC cards are weird and wonderful
https://aruarian.dance/blog/japan-ic-cards/
https://news.ycombinator.com/item?id=43993711

MCP: An in-depth introduction
https://www.speakeasy.com/mcp/mcp-tutorial
https://news.ycombinator.com/item?id=43972334

XTool – Cross-platform Xcode replacement
https://github.com/xtool-org/xtool
https://news.ycombinator.com/item?id=44011515

Wow@Home – Network of Amateur Radio Telescopes
https://phl.upr.edu/wow/outreach
https://news.ycombinator.com/item?id=44011489

Palette lighting tricks on the Nintendo 64
https://30fps.net/pages/palette-lighting-tricks-n64/
https://news.ycombinator.com/item?id=44014587

A kernel developer plays with Home Assistant
https://lwn.net/SubscriberLink/1017720/7155ecb9602e9ef2/
https://news.ycombinator.com/item?id=44011381

"We would be less confidential than Google" Proton threatens to quit Switzerland
https://www.techradar.com/vpn/vpn-privacy-security/we-would-be-less-confidential-than-google-proton-threatens-to-quit-switzerland-over-new-surveillance-law
https://news.ycombinator.com/item?id=44014808

Pyrefly: A new type checker and IDE experience for Python
https://engineering.fb.com/2025/05/15/developer-tools/introducing-pyrefly-a-new-type-checker-and-ide-experience-for-python/
https://news.ycombinator.com/item?id=44013913

What is Hacker News Highlights?

Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.