Noel Rappin
@noelrappin.com
Staff Engineer at Chime. Co-author of Programming Ruby. Author of Modern Front End Development for Rails. Also, http://noelrappin.com/about to find me. (He/Him)
Reposted by Noel Rappin
Just published this year's version of my "Ruby Changes" project: a full annotated changelog for Ruby 4.0:
rubyreferences.github.io/rubychanges/...
Goals: Full, comprehensive, concise, well-structured.
Examples, explanations of reasons, links to docs, all of it.
rubyreferences.github.io/rubychanges/...
Goals: Full, comprehensive, concise, well-structured.
Examples, explanations of reasons, links to docs, all of it.
Ruby 4.0 changes
Ruby 4.0 full and annotated changelog
rubyreferences.github.io
December 26, 2025 at 8:59 AM
Just published this year's version of my "Ruby Changes" project: a full annotated changelog for Ruby 4.0:
rubyreferences.github.io/rubychanges/...
Goals: Full, comprehensive, concise, well-structured.
Examples, explanations of reasons, links to docs, all of it.
rubyreferences.github.io/rubychanges/...
Goals: Full, comprehensive, concise, well-structured.
Examples, explanations of reasons, links to docs, all of it.
Hey! I'm very excited to announce!
We've got a brand new Programming Ruby 4.0 out just in time for the upcoming release:
pragprog.com/titles/ruby6...
Obviously this is a beta release (written off of RC2), but there will be a second beta right on the heels of the release next week.
We've got a brand new Programming Ruby 4.0 out just in time for the upcoming release:
pragprog.com/titles/ruby6...
Obviously this is a beta release (written off of RC2), but there will be a second beta right on the heels of the release next week.
Programming Ruby 4 (6th edition)
Code Ruby, Be Happy!
pragprog.com
December 18, 2025 at 5:14 PM
Hey! I'm very excited to announce!
We've got a brand new Programming Ruby 4.0 out just in time for the upcoming release:
pragprog.com/titles/ruby6...
Obviously this is a beta release (written off of RC2), but there will be a second beta right on the heels of the release next week.
We've got a brand new Programming Ruby 4.0 out just in time for the upcoming release:
pragprog.com/titles/ruby6...
Obviously this is a beta release (written off of RC2), but there will be a second beta right on the heels of the release next week.
I wanted to acknowledge that @davetron5000.com says that the new version of Sustainable Web Development with Ruby on Rails covering 8.1 (sustainable-rails.com) will be the last.
This is a great book, I've recommended it often, and I'm sad to see it end. (Though I understand why).
Thanks, Dave!
This is a great book, I've recommended it often, and I'm sad to see it end. (Though I understand why).
Thanks, Dave!
Sustainable Web Development with Ruby on Rails
Website for 'Sustainable Web Development with Ruby on Rails'
sustainable-rails.com
December 3, 2025 at 5:14 PM
I wanted to acknowledge that @davetron5000.com says that the new version of Sustainable Web Development with Ruby on Rails covering 8.1 (sustainable-rails.com) will be the last.
This is a great book, I've recommended it often, and I'm sad to see it end. (Though I understand why).
Thanks, Dave!
This is a great book, I've recommended it often, and I'm sad to see it end. (Though I understand why).
Thanks, Dave!
_The Raven Scholar_, a book that is going to be very, very prominently featured in my year-end book post is $2.99 today
amzn.to/4rLvY4i
Really, if you like fantasy at all and aren't deterred by 600 pages of book one of a trilogy, this one is very good.
amzn.to/4rLvY4i
Really, if you like fantasy at all and aren't deterred by 600 pages of book one of a trilogy, this one is very good.
The Raven Scholar (Eternal Path Trilogy Book 1)
Amazon.com: The Raven Scholar (Eternal Path Trilogy Book 1) eBook : Hodgson, Antonia: Kindle Store
amzn.to
December 1, 2025 at 11:15 PM
_The Raven Scholar_, a book that is going to be very, very prominently featured in my year-end book post is $2.99 today
amzn.to/4rLvY4i
Really, if you like fantasy at all and aren't deterred by 600 pages of book one of a trilogy, this one is very good.
amzn.to/4rLvY4i
Really, if you like fantasy at all and aren't deterred by 600 pages of book one of a trilogy, this one is very good.
![Tom Stoppard quote from The Real Thing: "“What we’re trying to do is write cricket bats, so that when we throw up an idea and give it a little knock, it might … travel … ([He] picks up the script.) Now, what we’ve got here is a lump of wood of roughly the same shape trying to be a cricket bat, and if you hit a ball with it, the ball would travel about ten feet and you will drop the bat and dance about shouting ‘Ouch!’ with your hands stuck into your armpits. (indicating the cricket bat) This isn’t better because someone says it’s better, or because there’s a conspiracy by the MCC to keep cudgels out of Lords. It’s better because it’s better.”](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:6m2y4ofnhv5igwxmpm5gh4m7/bafkreifmmb445saz2dwxnvgw2673hmlwws43zprbraptowzyqy4ty3gcke@jpeg)
Reposted by Noel Rappin
I had an incredible time at SF Ruby Conference! The venue, talks, and conversations were all top tier. See why in this blog! ✨
www.chael.codes/blog/2025/11...
#sfruby #sfruby2025
www.chael.codes/blog/2025/11...
#sfruby #sfruby2025
SF Ruby Conference 2025
I had an incredible time at the 2025 San Francisco Ruby Conference - two days of fantastic talks, inspiring conversations, and Ruby community magic!
www.chael.codes
November 29, 2025 at 12:21 AM
I had an incredible time at SF Ruby Conference! The venue, talks, and conversations were all top tier. See why in this blog! ✨
www.chael.codes/blog/2025/11...
#sfruby #sfruby2025
www.chael.codes/blog/2025/11...
#sfruby #sfruby2025
The sale is still ongoing!
It's time for the big @pragprog.com Black Friday sale!
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
Save 50% at the Pragmatic Bookshelf
media.pragprog.com
November 26, 2025 at 8:44 PM
The sale is still ongoing!
Reposted by Noel Rappin
It's time for the big @pragprog.com Black Friday sale!
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
Save 50% at the Pragmatic Bookshelf
media.pragprog.com
November 19, 2025 at 5:08 PM
It's time for the big @pragprog.com Black Friday sale!
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
Reposted by Noel Rappin
I note as I edit the Ruby/Lisp post that _Gödel, Escher, Bach_, published in 1979, has, as I type this, an Amazon rank under 5,000.
It's been decades since I read it, I wonder if the AI parts hold up.
It's been decades since I read it, I wonder if the AI parts hold up.
November 25, 2025 at 3:18 AM
I note as I edit the Ruby/Lisp post that _Gödel, Escher, Bach_, published in 1979, has, as I type this, an Amazon rank under 5,000.
It's been decades since I read it, I wonder if the AI parts hold up.
It's been decades since I read it, I wonder if the AI parts hold up.
Reposted by Noel Rappin
And here's the Ruby and Lisp post:
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
Ruby And Its Neighbors: Lisp – Noel Rappin Writes Here
I just write here
noelrappin.com
November 25, 2025 at 3:40 AM
And here's the Ruby and Lisp post:
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
And here's the Ruby and Lisp post:
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
Ruby And Its Neighbors: Lisp – Noel Rappin Writes Here
I just write here
noelrappin.com
November 25, 2025 at 3:40 AM
And here's the Ruby and Lisp post:
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
noelrappin.com/blog/2025/11...
I suppose I should call it `(post (and "Ruby" "Lisp))` -- no, actually, I probably very much should not do that.
And if you subscribe to the newsletter you can get this in your inbox.
I note as I edit the Ruby/Lisp post that _Gödel, Escher, Bach_, published in 1979, has, as I type this, an Amazon rank under 5,000.
It's been decades since I read it, I wonder if the AI parts hold up.
It's been decades since I read it, I wonder if the AI parts hold up.
November 25, 2025 at 3:18 AM
I note as I edit the Ruby/Lisp post that _Gödel, Escher, Bach_, published in 1979, has, as I type this, an Amazon rank under 5,000.
It's been decades since I read it, I wonder if the AI parts hold up.
It's been decades since I read it, I wonder if the AI parts hold up.
Reposted by Noel Rappin
Two good articles about #Ruby and #Smalltalk
1️⃣ Noel Rappin @noelrappin.com - Ruby And Its Neighbors: Smalltalk
I learned a bit more about Smalltalk from this article, which goes into detail about the main innovations that Smalltalk had:
1️⃣ Noel Rappin @noelrappin.com - Ruby And Its Neighbors: Smalltalk
I learned a bit more about Smalltalk from this article, which goes into detail about the main innovations that Smalltalk had:
November 20, 2025 at 12:15 PM
Two good articles about #Ruby and #Smalltalk
1️⃣ Noel Rappin @noelrappin.com - Ruby And Its Neighbors: Smalltalk
I learned a bit more about Smalltalk from this article, which goes into detail about the main innovations that Smalltalk had:
1️⃣ Noel Rappin @noelrappin.com - Ruby And Its Neighbors: Smalltalk
I learned a bit more about Smalltalk from this article, which goes into detail about the main innovations that Smalltalk had:
Strong recommendaction for Eloquent Ruby pragprog.com/titles/eruby....
November 19, 2025 at 5:22 PM
Strong recommendaction for Eloquent Ruby pragprog.com/titles/eruby....
It's time for the big @pragprog.com Black Friday sale!
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
Save 50% at the Pragmatic Bookshelf
media.pragprog.com
November 19, 2025 at 5:08 PM
It's time for the big @pragprog.com Black Friday sale!
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
This year, 50% off with code "save50" -- I think this is the biggest sale in Prag Bookshelf history! Ends December 1st.
Go to media.pragprog.com/newsletters/... for more info.
It's now official that the next version of Ruby is going to be 4.0
github.com/ruby/ruby/co...
We're working to get a beta of Programming Ruby 4.0 available about the time of the release with up-to-the minute changes for the new version.
github.com/ruby/ruby/co...
We're working to get a beta of Programming Ruby 4.0 available about the time of the release with up-to-the minute changes for the new version.
Development of 4.0.0 started. · ruby/ruby@6d81969
github.com
November 9, 2025 at 4:18 PM
It's now official that the next version of Ruby is going to be 4.0
github.com/ruby/ruby/co...
We're working to get a beta of Programming Ruby 4.0 available about the time of the release with up-to-the minute changes for the new version.
github.com/ruby/ruby/co...
We're working to get a beta of Programming Ruby 4.0 available about the time of the release with up-to-the minute changes for the new version.
There's like one gem in our ecosystem that blocks required_ruby_version and it's a huge pain in the neck for basically no gain.
Also please don't restrict bundler and ruby versions like `bundler < 3.0` and `required_ruby_version < 4.0` 🙏
Dear gem maintainers 👋
Rails 8.1 just dropped, but many gems can’t be used because of overly strict gemspec constraints.
Please don’t hard-restrict Rails versions, let us test early and report real issues sooner! ❤️
Thanks
Rails 8.1 just dropped, but many gems can’t be used because of overly strict gemspec constraints.
Please don’t hard-restrict Rails versions, let us test early and report real issues sooner! ❤️
Thanks
November 9, 2025 at 4:02 PM
There's like one gem in our ecosystem that blocks required_ruby_version and it's a huge pain in the neck for basically no gain.
Well, while doing research for the next Ruby and its Neighbors article (this one's about Lisp), I fell down a rabbit hole that ended up with me finding one of my freshman professors on LinkedIn...
November 8, 2025 at 9:53 PM
Well, while doing research for the next Ruby and its Neighbors article (this one's about Lisp), I fell down a rabbit hole that ended up with me finding one of my freshman professors on LinkedIn...
Yay!
It's official! The beta release of Eloquent Ruby, 2nd edition is now on sale!
pragprog.com/titles/eruby...
pragprog.com/titles/eruby...
Eloquent Ruby, Second Edition
Write elegant Ruby code--not just correct, but idiomatic. Go beyond the vocabulary and syntax and learn to express yourself with eloquence.
pragprog.com
November 7, 2025 at 7:46 PM
Yay!