How RIZAP Technologies Turns Junior Developers Into Senior Ruby Engineers

How RIZAP Technologies Turns Junior Developers Into Senior Ruby Engineers December 29, 2025 At RubyWorld Conference 2025 and Kaigi on Rails 2025, a talk by Tomohiro Umeda from RIZAP Technologies quietly delivered one of the most important messages for the future of Ruby engineering. Most companies would love to hire senior engineers. But in reality … Continue reading How RIZAP Technologies Turns Junior Developers Into Senior Ruby Engineers →

Running Ruby 4 with Ruby::BOX inside Docker (Alpine)

Ruby 4 with Ruby::BOX December 24, 2025 Ruby 4 introduces one of the most important runtime features in the history of the language: Ruby::BOX. It allows Ruby to execute multiple isolated class worlds inside the same process, finally making it possible to load conflicting libraries, plugins, and user code safely. In this guide we will … Continue reading Running Ruby 4 with Ruby::BOX inside Docker (Alpine) →

Building a DFA-Based Regular Expression Engine in Ruby

December 23, 2025 Inspired by a talk by Yudai Takada (@ydah) at Hokuriku Ruby Kaigi 01 Advertise on RubyStackNews RubyStackNews is a niche publication read by Ruby and Rails developers worldwide. Our audience includes senior engineers, tech leads, and decision-makers from the US, Europe, and Asia. Sponsorship Options 📝 Article Sponsorship Your brand featured inside … Continue reading Building a DFA-Based Regular Expression Engine in Ruby →

Parsing Taiwanese Like Code

December 19, 2025 How Ruby, Parser Theory, and Linguistic Precision Solved a Problem No One Wanted At RubyWorld Conference 2025, Mu-Fan Teng (鄧慕凡)—founder of 5xRuby and long-time Ruby community leader—presented a talk that quietly demonstrated something powerful: compiler theory is not limited to programming languages. In “Parsing Taiwanese Like Code”, Teng showed how a real-world … Continue reading Parsing Taiwanese Like Code →

A Definitive Guide to Running PicoRuby on ESP32 (ESP-IDF 5.x)

December 18, 2025 Running PicoRuby on an ESP32 is absolutely possible — but today it is not straightforward, and most guides omit critical details. This article consolidates everything that actually matters, based on real-world setup, debugging, and integration with ESP-IDF 5.5. If you follow this guide exactly, you will end with: PicoRuby running on an … Continue reading A Definitive Guide to Running PicoRuby on ESP32 (ESP-IDF 5.x) →

Exploring the World of Electronic Engineering with PicoRuby

Exploring the World of Electronic Engineering with PicoRuby December 11, 2025 Based on the presentation “Exploring the World of Electronic Engineering with PicoRuby” by Hayao Kimura at Ruby World Conference 2025. Advertise on RubyStackNews RubyStackNews is a niche publication read by Ruby and Rails developers worldwide. Our audience includes senior engineers, tech leads, and decision-makers … Continue reading Exploring the World of Electronic Engineering with PicoRuby →

🧰 Ruby Gems With Powerful Generators You Should Be Using in Your Rails Projects

December 9, 2025 A curated list of tools that accelerate development and keep your codebase clean One of the most underrated strengths of Ruby on Rails is its generator ecosystem. Beyond the native Rails generators, many gems ship with their own commands to scaffold authentication, background jobs, pagination, translations, slugs, geolocation, and much more. These … Continue reading 🧰 Ruby Gems With Powerful Generators You Should Be Using in Your Rails Projects →

RubyWorld Conference 2025: PicoRuby, mruby Girls, and the Future of Embedded Ruby

December 8, 2025 The RubyWorld Conference 2025, held in Matsue, Japan, showcased an unexpected star of the ecosystem: Ruby running on microcontrollers. While the event traditionally focuses on Ruby in web, enterprise, or academic settings, this year a significant amount of attention shifted toward embedded systems, thanks to PicoRuby and the community project mruby Girls. … Continue reading RubyWorld Conference 2025: PicoRuby, mruby Girls, and the Future of Embedded Ruby →

🚦 Understanding CORS in Modern Web Development

December 5, 2025 A Complete Guide for Ruby on Rails, React, and React Native Developers Cross-Origin Resource Sharing (CORS) is one of the most misunderstood parts of modern web development — and one of the most common sources of errors developers face when building APIs. If you’re working with Ruby on Rails, React, or React … Continue reading 🚦 Understanding CORS in Modern Web Development →

💥 Yes, YOU Can Fix a Bug in IRB — Here’s How a Simple Emoji Crash Led to a Real Ruby Patch

December 4, 2025 Most developers think contributing to Ruby’s internals requires wizard-level C skills, decades of experience, and a direct line to Matz. Advertise on RubyStackNews RubyStackNews is a niche publication read by Ruby and Rails developers worldwide. Our audience includes senior engineers, tech leads, and decision-makers from the US, Europe, and Asia. Sponsorship Options … Continue reading 💥 Yes, YOU Can Fix a Bug in IRB — Here’s How a Simple Emoji Crash Led to a Real Ruby Patch →