Hacker News with Generative AI: Ruby

RubyUI (Former PhlexUI): Ruby Gem for RubyUI Components (github.com/ruby-ui)
Beautifully designed components that you can copy and paste into your apps. Accessible. Customizable. Open Source.

Ruby, Web Development, UI Libraries, Open Source, Programming

163 points by ksec 1 day ago | 38 comments

Ruby makes advanced CLI options easy (searls.co)
If you're not a "UNIX person", the thought of writing a command line application can be scary and off-putting.

Ruby, Programming, Software Development

12 points by thunderbong 5 days ago | 0 comments

The Gang of Four is wrong and you don't understand delegation (2012) (saturnflyer.com)
The Gang of Four got it wrong. Ruby's standard library has it wrong. Rails has it wrong.

Programming, Software Design, Ruby, Object-Oriented Programming

27 points by Tomte 7 days ago | 54 comments

Nōdo – Call Node.js from Ruby (github.com/mtgrosser)

Ruby, Node.js, Software, Programming Languages, Interoperability

8 points by namiwang 8 days ago | 0 comments

Exploring Ruby Ractors – I paid for for 10 cores I'm gonna use 10 cores (jpterry.com)
“I paid for 10 cores, I’m gonna use 10 cores!”

Ruby, Programming, Performance, Multithreading

15 points by todsacerdoti 10 days ago | 0 comments

Ruby, Ractors, and lock-free data structures (iliabylich.github.io)
This story is about concurrent data structures in the context of Ruby. The goal here is to demonstrate how true parallelism can be achieved with global mutable state (which at the time of writing, is not supported by built-in Ruby primitives).

Ruby, Programming Languages, Concurrency, Data Structures

137 points by ksec 11 days ago | 9 comments

Ratomic: Provides Mutable data structures for use with Ruby's Ractors (github.com/mperham)

Ruby, Programming, Data Structures, Concurrency

9 points by ksec 11 days ago | 2 comments

How to create value objects in Ruby – the idiomatic way (ghinda.com)
When writing Ruby OOP, a typical pattern might be to create an object to group multiple values together meaningfully and sometimes also add some extra methods (computed properties, predicates, representations, …) to allow the object to respond to various situations.

Ruby, Object-Oriented Programming, Software Development

59 points by thinkingemote 13 days ago | 2 comments

TruffleRuby 24.2.0 (github.com/oracle)
TruffleRuby is a high-performance implementation of the Ruby programming language.

Ruby, Programming Languages, New Releases, Software

24 points by mooreds 13 days ago | 0 comments

How to create value objects in Ruby – the idiomatic way (ghinda.com)
When writing Ruby OOP, a typical pattern might be to create an object to group multiple values together meaningfully and sometimes also add some extra methods (computed properties, predicates, representations, …) to allow the object to respond to various situations.

Ruby, Object-Oriented Programming, Value Objects

42 points by unripe_syntax 14 days ago | 18 comments

Sign in as anyone: Bypassing SAML SSO authentication with parser differentials (github.blog)
Critical authentication bypass vulnerabilities (CVE-2025-25291 + CVE-2025-25292) were discovered in ruby-saml up to version 1.17.0. Attackers who are in possession of a single valid signature that was created with the key used to validate SAML responses or assertions of the targeted organization can use it to construct SAML assertions themselves and are in turn able to log in as any user.

Security, Authentication, SAML, Ruby, Vulnerabilities

312 points by campuscodi 18 days ago | 123 comments

OmniAI: A unified Ruby API for integrating with AI providers (github.com/ksylvest)
OmniAI provides a unified Ruby API for integrating with multiple AI providers, including Anthropic, DeepSeek, Google, Mistral, and OpenAI. It streamlines AI development by offering a consistent interface for features such as chat, text-to-speech, speech-to-text, and embeddings—ensuring seamless interoperability across platforms. Switching between providers is effortless, making any integration more flexible and reliable.

Ruby, AI, API, Open Source, Programming

10 points by jvergeldedios 19 days ago | 1 comments

Matching Regexps 200 Times Faster (eregon.me)
You might have seen @byroot’s excellent blog post series on optimizing the json gem. From the first blog post it’s clear most of the time for generating JSON is spent in generate_json_string() and specifically in convert_UTF8_to_JSON(), i.e., in converting Ruby Strings to JSON Strings.

Performance Optimization, Ruby, JSON, Regular Expressions

28 points by todsacerdoti 19 days ago | 12 comments

Sign in as anyone: Bypassing SAML SSO authentication with parser differentials (github.blog)
Critical authentication bypass vulnerabilities (CVE-2025-25291 + CVE-2025-25292) were discovered in ruby-saml up to version 1.17.0. Attackers who are in possession of a single valid signature that was created with the key used to validate SAML responses or assertions of the targeted organization can use it to construct SAML assertions themselves and are in turn able to log in as any user.

Security, Authentication, SAML, Open Source, Ruby

10 points by mark 21 days ago | 0 comments

RubyLLM: A delightful Ruby way to work with AI (github.com/crmne)
A delightful Ruby way to work with AI. No configuration madness, no complex callbacks, no handler hell – just beautiful, expressive Ruby code.

Ruby, Programming Languages

644 points by ksec 23 days ago | 169 comments

Show HN: RubyLLM 1.0 – A Beautiful Ruby Way to Work with AI (rubyllm.com)
A delightful Ruby way to work with AI through a unified interface to OpenAI, Anthropic, Google, and DeepSeek.

Ruby, AI, Open Source

30 points by earcar 23 days ago | 19 comments

Ruby Dooby Doo (github.com/daz4126)
Helping JS do more Ruby.

JavaScript, Ruby, Programming Languages

6 points by daz4126 25 days ago | 0 comments

ZJIT: Building a Next Generation Ruby JIT (rubykaigi.org)
YJIT can make Ruby code run faster, but this is a balancing act, because the JIT compiler itself must consume both memory and CPU cycles to compile and optimize your code while it is running.

Ruby, Programming Languages, Performance, JIT Compilers, Optimization

19 points by ksec 29 days ago | 3 comments

OmniAI 2.0: An LLM-Agnostic Ruby Library (ksylvest.com)
Today marks the release of OmniAI 2.0. 2.0 represents a significant upgrade to our Ruby library that standardizes interactions with various LLM providers. Whether you're working with Anthropic, DeepSeek, Google, Mistral, or OpenAI, OmniAI offers a consistent interface that simplifies AI integration into your Ruby applications.

Ruby, AI, Libraries

6 points by thunderbong 30 days ago | 1 comments

Phlex for Rails Emails: Action Mailer Without ERB (camillovisini.com)
Writing Ruby all day is fun, but writing Ruby in HTML is not. In the past months, I found switching from Ruby to ERB views and partials to be interrupting my flow and therefore increasingly annoying. Enter Phlex, which is a Ruby library that allows you to write HTML (components, views, layouts) in pure Ruby. After already completely ditching ERB for Phlex in Rails views for multiple applications, I wanted to see if I could do the same for Action Mailer.

Ruby, Rails, Email, Web Development, Programming

71 points by camillovisini 31 days ago | 24 comments

Ruby not dead it seems (gitlab.io)
Ruby is an easy to learn programming language, it was invented by a guy named Matz [1] in Japan. Ruby is a free [2] software and can be used by anyone for zero cost. Ruby’s popularity was initially confined to Japan, later it slowly trickled out to rest of the world. Things changed with the emergence of Ruby on Rails [3] which is a popular web-development framework written with Ruby.

Programming, Ruby, Web Development, Japan

36 points by puuush 32 days ago | 5 comments

What's the Deal with (Ruby) Ractors? (byroot.github.io)
When Ractors were announced 4 or 5 years ago, many people expected we’d quickly see a Ractor-based web server, some sort of Puma but with Ractors instead of threads. Yet this still hasn’t happened, except for a few toy projects and experiments.

Ruby, Programming, Web Development, Concurrency

16 points by ksec 34 days ago | 0 comments

Tiny JITs for a Faster FFI (railsatscale.com)
Can we have a faster FFI for CRuby? Yes.

Ruby, Programming Languages, Performance, JIT Compilation

316 points by hahahacorn 49 days ago | 138 comments

Implementing a Game Boy emulator in Ruby (sacckey.dev)
I created a Game Boy emulator in Ruby and released it as a gem called rubyboy! (I’d be happy if you could give it a star!)

Ruby, Game Boy, Emulators, Software, Programming

137 points by Kerrick 56 days ago | 11 comments

Ruby “Thread Contention” Is Simply GVL Queuing (island94.org)
For the longest time, I’ve misunderstood the phrase “thread contention”. It’s a little embarrassing that given I’m the author of GoodJob (👍) and a maintainer of Concurrent Ruby and have been doing Ruby and Rails stuff for more than a decade. But true.

Ruby, Programming, Threading, Concurrency

97 points by ciconia 59 days ago | 56 comments

Ruby Source Parsing (alchemists.io)
One powerful tool in your debugging arsenal is the ability to quickly obtain an object’s source location and/or the original source code itself.

Ruby, Debugging, Programming, Tools

3 points by chmaynard 60 days ago | 0 comments

Ruby Falcon is 2x faster than asynchronous Python, as fast as Node.js (reddit.com)
Ruby Falcon is 2x faster than asynchronous Python, as fast as Node.js, and slightly slower than Go. Moreover, the Ruby code doesn’t include async/await spam.

Programming, Performance, Ruby, Node.js, Python

8 points by a_ermolaev 64 days ago | 0 comments

Better Know a Ruby Thing: Singleton Classes (noelrappin.com)
It is time to Better Know what is perhaps the Ruby-iest of Ruby things, a feature that didn’t even have an official name for several years, despite being critical to Ruby’s Object-Oriented semantics. (It only just now occurs to me that there was no official name in English, I wonder what the Japanese name for it was…).

Ruby, Programming Languages, Object-Oriented Programming

130 points by mooreds 65 days ago | 25 comments

Supercharge SQLite with Ruby Functions (julik.nl)
An interesting twist in my recent usage of SQLite was the fact that I noticed my research scripts and the database intertwine more. SQLite is unique in that it really lives in-process, unlike standalone database servers. There is a feature to that which does not get used very frequently, but can be indispensable in some situations.

Ruby, SQLite, Databases, Programming, Performance

159 points by julik 69 days ago | 43 comments

The Mythical IO-Bound Rails App (byroot.github.io)
When the topic of Rails performance comes up, it is commonplace to hear that the database is the bottleneck, so Rails applications are IO-bound anyway, hence Ruby performance doesn’t matter that much, and all you need is a healthy dose of concurrency to make your service scale.

Ruby, Performance, Databases, Rails

16 points by ksec 69 days ago | 0 comments