Claiming evidence of a multiverse is certainly one way to get your blog post out there. blog.google/technology/res…

Just released Prism v1.3.0. * Prism::StringQuery * Prism::Relocation * A simpler build system * Much more documentation * More invalid code rejected * Better error messages * A bunch more stuff Last release before Ruby 3.4!

Truly and completely heartbroken for this loss. Noah was inspirational in his desire to make Ruby and Rails accessible. He was always willing to chat, even before we got to work together. This community will deeply miss him and his myriad contributions. I will miss him a lot.

This is incredibly niche, but maybe someone knows. I'm seeing pthread_key_create destruction callbacks fired _after_ the thread has cleaned up thread_local variables in C11, but only on macOS. On all other platforms, TLS is unchanged. Wat?

This is what I'm talking about. Looks like the TLS area is cleaned up before the pthread_key_create callback is called, but only on macOS. Works as expected on Windows and Linux. Annoying. I guess I can't rely on automatic TLS within pthread callbacks. gist.github.com/kddnewton/080a…

Ruby 3.4.2 is out, which includes fixes for just about everything I know of related to Prism. We’re into the truly esoteric code now, and it appears that everything is working! github.com/ruby/ruby/rele…

Here we go. That one I really needed to get of my chest for the better part of a year, so I feel relieved now. It's really long but hopefully not too hard to follow. byroot.github.io/ruby/performan…

If you are a Ruby developer, then any time Ilya publishes something you need to pay attention. Very impressive work went into this post.

This was the dream the whole time, and it’s really nice that when it finally happens it’s relatively quiet. That means it’s actually working.

It makes me unreasonably frustrated that x86-64 uses AH for the remainder in 8-bit unsigned division. I'm sure there's a good hardware reason, but I wish it were DH to be consistent.

Last week I released Prism v1.5.0. This is the first release since I went on paternity leave (so it's been a while...). It is the first release to include Ruby 3.5 syntax (including leading logical operators!). Slowly burning down the remaining bugs! github.com/ruby/prism/rel…

For... reasons, I ended up writing my own SHA-1 and SHA-2 implementations in C. They are written in hilariously portable C89 (I'm fairly certainly this would run correctly on any machine you could find, including with CHAR_BIT != 8). Thought I'd share. github.com/kddnewton/sha/…