2026-02-19T10:57:18+00:00 https://leftofthe.dev/ Aaron Sumner aaron@leftofthe.dev 2026-02-19T00:00:00+00:00 https://leftofthe.dev/2026/02/19/claude-code-skills-superpowers Software developers who think critically write better code. Here's how I've incorporated an excellent set of Claude Code skills to bake critical thinking into my agentic workflow. 2025-11-09T00:00:00+00:00 https://leftofthe.dev/2025/11/09/legacy-code-overview-llm Old software systems can be scary. Learn their quirks and conventions with some agentic assistance. 2025-10-27T00:00:00+00:00 https://leftofthe.dev/2025/10/27/left-of-the-dev-everyday-rails I'm taking this site in a new direction! Here's why, and what to expect going forward. 2025-09-16T00:00:00+00:00 https://leftofthe.dev/2025/09/16/rspec-book-rails-7 New content on top-down testing and covering your app's supporting features. 2025-05-18T00:00:00+00:00 https://leftofthe.dev/2025/05/18/happy-birthday A brief look back on the past five years, and a peek at what's ahead for Everyday Rails. 2025-04-15T00:00:00+00:00 https://leftofthe.dev/2025/04/15/old-ruby-rails-dev-container How do you get an ancient Rails application running on newer hardware? Dev containers to the rescue! 2025-04-05T00:00:00+00:00 https://leftofthe.dev/2025/04/05/rspec-book-april-2025-announcement Fresh takes on all things mocking! 2025-03-09T00:00:00+00:00 https://leftofthe.dev/2025/03/09/dotfiles-gh-extensions Recover from laptop disasters a little faster through automation! 2025-01-07T00:00:00+00:00 https://leftofthe.dev/2025/01/07/aider-ai-dev-container Here's how I'm using Aider as an AI pair programming buddy in dev containers, without dealing with Python 2024-12-29T00:00:00+00:00 https://leftofthe.dev/2024/12/29/rspec-book-december-2024-announcement All-new coverage of system specs