Enable opusplan mode for Claude Code
What is opusplan mode? Anthropic documentation says: “Special mode that uses opus during plan mode, then switches to sonnet for execution” Here is how to enable it: 1. Inside...
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2026
Claude Code settings: default to plan mode and plans directory
If you are usually first go to plan mode in Claude Code then you can set this mode as default in two ways: 1. You...
Few personal notes from the "How AI Impacts Skill Formation" from Anthropic
Anthropic published a study called "How AI Impacts Skill Formation" exploring how AI assistance affects both productivity and learning when developers work with new concepts....
Ruby Content and AI in the newsletter
Every week I curate what the Ruby community shares online and publish it in Short Ruby Newsletter. In the last few months, I noticed a...
If you're writing API documentation, always specify units for duration parameters.
If you're writing API documentation, always specify units for duration parameters. Not just "timeout: 30" but "timeout: 30 seconds" or better yet name the parameter...
Plan your upgrades of Rails
If you are doing some planning this week, consider adding checkpoints for upgrading your #Rails app Specifically, if you are still running Rails 7.2T.x Security...
Ruby and token-efficiency
Seems like Ruby is pretty well positioned as a language that is token-efficient when used with LLMs. Source "Which programming languages are most token-efficient?" by...
2025
If claude code sometimes skip CLAUDE.md file
I was reading this article: https://www.humanlayer.dev/blog/writing-a-good-claude-md and found there the following: Then I was curious to find out more about this system-reminder and to identify...
Ruby Namespace will be renamed to Ruby::Box
The Ruby namespace will be renamed to `Ruby::Box`. A merge request regarding this was integrated into Ruby's master branch a couple of days ago by...
Two good articles about Ruby and Smalltalk
Noel Rappin - Ruby And Its Neighbors: Smalltalk Noel Rappin continues his series of writing about Ruby and languages that inspire it (if you have...
Let's discuss Ruby more openly
I'm certain, although I haven't had the time to develop a proper data scraper to confirm, that Ruby articles are appearing more frequently on the...
Some good articles from Ruby published last week
1️⃣ Noel Rappin published an article about Ruby And Its Neighbors: Perl2️⃣ Sam Ruby published an article about Testing Frozen String Literals in Production There...
Two ideas from an old creativity research
Amabile, Teresa M. “A Model of Creativity and Innovation in Organizations.” Research in Organizational Behavior 10, no. 10 (January 1, 1988): 123–67. https://ci.nii.ac.jp/naid/20000708825. Here is...
We might start to see this kind of request to disclose use of AI when contributing to open-source
Ghostty introduced this section to their CONTRIBUTING.md file And I think this part here is a normal expectation for any AI code contributed to a...
How I use git worktree
I've been using git worktree for at least five years now. Here's how I set things up at work. Say I work on `short_ruby` project. ...
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Why do I activate Vim in any code editor I work with
Why do I activate Vim in any code editor I work with? Imagine a list of emails in a Google Sheet in a single column,...
A personal newsletter
I launched a personal newsletter at newsletter.lucianghinda.com This morning, I sent my first email. Why start this newsletter? I had newsletters set up in multiple...
Designing Database Schemas for Clarity
Whenever I create a new table or column in a web app, I aim for clarity so that anyone connecting directly to the database can...
In Ruby who's already there in main?
When you open a Ruby file who's already there? puts self.inspect # main puts self.__id__ # 16 puts self.class.name # Object puts method(:inspect).owner.class # ObjectWhy...
Timeless articles about working with Time and Timezones in Ruby and Ruby on Rails
Here are two resources that I think are important to read when you are working with Time in Ruby. It's About Time (Zones)This article is...