My RubyKaigi talk is out on YouTube! In this talk, I go over the current state of dev tooling, why excessive fragmentation increases the barrier to entry in the Ruby community, why default developer experiences matter and how we can improve. youtube.com/watch?v=qhp04E…

After 2.5 years of development (Mar '22 to Sep '24) we have officially rewritten (from scratch!) the CRuby parser and compiler, and merged it in as the default for the next preview release. Blog post to follow. github.com/ruby/ruby/pull…

TruffleRuby 24.1 is released!🚀🎉 It updates to Ruby 3.2.4, gets a lot of compatibility and bug fixes, and significant performance improvements: github.com/oracle/truffle… Available via ruby-install/ruby-build/rbenv/asdf/rvm/setup-ruby as usual.

Ruby 3.4.0 preview2 Released ruby-lang.org/en/news/2024/1… In this release the default parser is switched from parse.y to Prism

The first version of CRuby with Prism as the default parser has been released. Please try it out on your applications and let me know if you find any issues! ruby-lang.org/en/news/2024/1…

Rails Core member Aaron Patterson delivered the closing keynote at this year's #RailsWorld. With his unique presentation style (a little bit technical, a little BS) he talked about speeding up the Rails Router, building faster parsers...and lambos. Watch the full talk here:

"Benchmarking Ruby parsers is trickier than one might expect, but overall the result is clear: ..." (new blog post) eregon.me/blog/2024/10/2…

Ruby 3.3.6 Released ruby-lang.org/en/news/2024/1… This is a routine update that includes minor bug fixes. It also stops warning missing default gem dependencies that will be bundled gems in Ruby 3.5. For more details, please refer to the release notes on GitHub github.com/ruby/ruby/rele…

Unsurprisingly, TruffleRuby blazes on these synthetic benchmarks 🏃 Benoit Daloze

I just merged a new interpreter into Python 3.14. This interpreter promises -3-30% better performance on newer compilers. docs.python.org/3.14/whatsnew/… Thanks to Mark Shannon, Donghee Na, Diego Russo, Garrett Gu, Haoran Xu, and Josh Haberman for ideas and help.

New blog post: “Matching Regexps 200 Times Faster” eregon.me/blog/2025/03/1…

Matching Regexps 200 Times Faster eregon.me/blog/2025/03/1… Discussions: discu.eu/q/https://ereg… #programming #ruby by Benoit Daloze

TruffleRuby 24.2 is released!🚀🎉 It uses the new Java Panama API in JVM mode to speedup C extensions like sqlite3, trilogy & json by 2 to 3 times! It optimizes encoding negotiation, and updates to Ruby 3.3! All changes: github.com/oracle/truffle… Blog post: medium.com/graalvm/whats-…

RuboCop 1.75 is out with improved support for #Ruby 3.4! You won't be able to tell it from the outside, but this release required a ton of work to get to the point where Ruby 3.4 functionality was exposed via Prism's Parser translation layer. (we're now using Prism by default on

New blog post: “Contributions to ruby/spec” eregon.me/blog/2025/05/0…

Officially admitting he, Vance and Elon are the Siths. May you end like them. The text makes a lot more sense if you fix the typo: s/Left/Republican/