How It Became Like This? Ruby's Range Class — An exploration of one of Ruby’s core classes — specifically the Range type and its associated syntax, looking at how it works and how its behavior has evolved over time.

Victor Shepelev

Developer’s Guide to Heroku Dynos — Which dynos should you use, and how many? (TLDR: Don’t use Perf-M!)

Judoscale sponsor

Heroku Ruby Cloud Native Buildpack (CNB) Tutorial — A 2024 update for Heroku’s tutorial for building a Rails app image with no Dockerfile required. And, no, you don’t need to use Heroku to run or deploy it (indeed it runs locally).

Heroku

Multiplayer Minesweeper with Rails and Hotwire? — We recently featured a post about implementing Minesweeper in 100 lines of Ruby, but what if we could make it multiplayer? Radan pulls it off, with a live demo now up at MinesVsHumanity. There might be a game in action if you’re lucky..

Radan Skorić

Implementing Semantic Search in a Rails App — The idea is that you use OpenAI’s API to create embeddings of content, the Neighbor gem to search them, and Anthropic’s Claude API for summarization.

Robert Ross

🌳 Need to Upgrade to Ruby 3.3 on a Budget? Try Bonsai by FastRuby.io — Stuck on Ruby 2.7? Stop postponing your upgrade; ship it with our fixed-cost monthly maintenance service. 🚀

Bonsai By FastRuby.io sponsor

IRuby: A Ruby Kernel for Jupyter Notebooks — Notebook interfaces make it easy to do literate programming where you see results immediately like a REPL but with persistence and control over the formatting of the source code. Common in the Python world, IRuby brings Ruby into the picture too.

Ruby Science Foundation

ERB Lint: A Linter for ERB and HTML Files — Includes a variety of default linting rules for detecting bad syntax, stray newlines, unauthorized script tags, and unsafe interpolation.

Shopify

Your Fastest Path to Production — Build, deploy, and scale your apps with unparalleled ease – from your first user to your billionth.

Render sponsor

ScreenRecorder: Record your Screen from Ruby — It uses FFmpeg behind the scenes but is controllable from Ruby and might be something you’d want to integrate with an automated UI testing run, say.

Lakshya Kapoor