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RubyKaigi 2025

Day 2 (125)

YJIT talk: move code to Ruby to make it faster.
Class.new talk: Introducing Primitive and move Class.new to make it faster

Am I seeing a trend here?

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We've got a few Ruby Central team members at this week! 😍 🇯🇵

It's always great to get together IRL. If you see us, please feel free to say hi! We'd love to chat about RubyGems, Bundler, RailsConf, and all things Ruby. 💎

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It's still too sad that sponsor booths in are all "please follow us/share your result on X" ...

To be fair, nothing would make people move out of X unless the official accounts _also_ move out of X.

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Watching Alexander Momchilov talk about how Shopify has migrated the RBS type checking tool for Ruby from a CRuby extension to a pure C library, enabling its use on JRuby with FFI! Amazing work, many thanks to the whole team!

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Day1 is over. Now it's 3am in Matsuyama. The keynote from @ima1zumi was awesome and gave us nice feelings. TRICK was absolutely amazing, it could change how we look at code. And yes, it's midnight already. I need some sleep for the rest of the conference (2 days!)

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