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
Workshops from 2025 SF Ruby Conference are now live. These include:
- @tonsoffun.bsky.social on building AI agents with Rails
- Brandon Shar, @skryukov.dev, and Brian Knoles on Inertia Rails
- @kaspth.com on upskilling your team
- @noelrappin.com on Ruby’s dynamism to your advantage
- @tonsoffun.bsky.social on building AI agents with Rails
- Brandon Shar, @skryukov.dev, and Brian Knoles on Inertia Rails
- @kaspth.com on upskilling your team
- @noelrappin.com on Ruby’s dynamism to your advantage
San Francisco Ruby Conference 2025 - Workshops - YouTube
Workshop recordings from day one and day two of the SF Ruby Conference.
youtube.com
January 21, 2026 at 6:34 PM
Workshops from 2025 SF Ruby Conference are now live. These include:
- @tonsoffun.bsky.social on building AI agents with Rails
- Brandon Shar, @skryukov.dev, and Brian Knoles on Inertia Rails
- @kaspth.com on upskilling your team
- @noelrappin.com on Ruby’s dynamism to your advantage
- @tonsoffun.bsky.social on building AI agents with Rails
- Brandon Shar, @skryukov.dev, and Brian Knoles on Inertia Rails
- @kaspth.com on upskilling your team
- @noelrappin.com on Ruby’s dynamism to your advantage
I haven't mentioned it yet here, but Programming Ruby 4.0 does have a new beta out that runs all code against Ruby 4.0.0 final, and also covers Minitest 6.0 and a couple of other late breaking changes:
pragprog.com/titles/ruby6...
pragprog.com/titles/ruby6...
Programming Ruby 4 (6th edition)
Code Ruby, Be Happy!
pragprog.com
January 15, 2026 at 5:14 PM
I haven't mentioned it yet here, but Programming Ruby 4.0 does have a new beta out that runs all code against Ruby 4.0.0 final, and also covers Minitest 6.0 and a couple of other late breaking changes:
pragprog.com/titles/ruby6...
pragprog.com/titles/ruby6...
Reposted by Noel Rappin
Happy to announce that I'm joining as a member of the Board of Directors for @rubycentral.org!
www.linkedin.com/posts/keysto...
www.linkedin.com/posts/keysto...
I’m happy to share that I’m starting a new position as Board Member at Ruby Central, Inc.!
I'm looking forward to serving the Ruby Community. | Brandon Weaver
I’m happy to share that I’m starting a new position as Board Member at Ruby Central, Inc.!
I'm looking forward to serving the Ruby Community.
www.linkedin.com
January 7, 2026 at 8:45 PM
Happy to announce that I'm joining as a member of the Board of Directors for @rubycentral.org!
www.linkedin.com/posts/keysto...
www.linkedin.com/posts/keysto...
Reposted by Noel Rappin
My new profile pic is from an old issue of MAD Magazine where I popped up in Dave Berg's "The Lighter Side Of..."
January 5, 2026 at 6:03 PM
My new profile pic is from an old issue of MAD Magazine where I popped up in Dave Berg's "The Lighter Side Of..."
Also, in news that will intrigue at least one or two of you, I actually managed to do mini book reviews as I read books in 2025, meaning my 2025 "Books I Liked" post, which traditionally comes out in, like, April, may actually come out in January.
January 5, 2026 at 8:32 PM
Also, in news that will intrigue at least one or two of you, I actually managed to do mini book reviews as I read books in 2025, meaning my 2025 "Books I Liked" post, which traditionally comes out in, like, April, may actually come out in January.
I think this is still going on for another day or two, and yes, Programming Ruby 4.0 qualifies:
pragprog.com/titles/ruby6...
pragprog.com/titles/ruby6...
January 5, 2026 at 8:20 PM
I think this is still going on for another day or two, and yes, Programming Ruby 4.0 qualifies:
pragprog.com/titles/ruby6...
pragprog.com/titles/ruby6...
Reposted by Noel Rappin
We just had our biggest day in StoryGraph history! Thanks for joining, we have big plans for 2026!
January 2, 2026 at 4:41 PM
We just had our biggest day in StoryGraph history! Thanks for joining, we have big plans for 2026!
Reposted by Noel Rappin
December 31, 2025 at 12:40 PM
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.