I read that Hash#key? was slower than Hash#[] and it made me sad because, shouldn’t Hash#key? generally require less work?

css_modules provides an approach to styling UI components in a local-first way.

I just got back from RubyConf Colombia. The content was great, the community was great, and the venue was great!

Specialising Dynamic Techniques for Implementing the Ruby Programming Language (“Specializing Ruby”) is approachable and enjoyable (despite being a PhD thesis 😝).

I like using Sprockets, but sometimes it’s hard to find a file to include in the asset pipeline. Here are some methods I use to find browser-ready JavaScript files.

When reviewing issues for react-rails, I see many questions about how to gather JavaScript dependencies with Sprockets. Here is how I use Sprockets to manage JavaScript dependencies.

Elixir modules offer some valuable insight into designing Ruby classes.

Although Relay made GraphQL famous, GraphQL was in use at Facebook for years before Relay took the scene. You can use plain AJAX requests to interact with a GraphQL server, too.

This question is too hard. Instead, ask, “how many behaviors per test case?” and answer, “one.”

The Crystal programming language combines Ruby-like syntax with a really powerful compiler. As a result, it’s fun to write, fast to run, and hard to screw up!