Long due, at last read. Nice summary of the important changes the 2.7 brings - with code examples.
Short end-to-end walkthrough of what happens behind the curtain when you call
perform_async on your Sidekiq job until the moment it is executed.
Introducing RBS, Ruby’s new type signature language. What you can write using RBS, the key concepts of the design of RBS, and the benefits and tools that come with RBS.
Non-trivial tips for database development.
Thoughts about the differences between CLIs and GUIs in relation to materiality of user interaction and it's consequences.
Nice quick overview of bitwise operation and how to use them in ruby to do some basic "tricks".
Use Postgres' DISTINCT ON clause to get rid of N+1 in Rails.
Quick list of cool ways to use the *splat operator.