Ruby’s Safe Navigation Operator &. and is it a Code Smell?

What is &.?

Ruby devs are probably all too familiar with seeing this error:

Most of the time, it’s probably due to a typo, but every now and then we end up having to do something like:

If you’re on Rails, or are using ActiveSupport, you can use present? or try():

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Composition over Inheritance, with JavaScript examples

If you are into object-oriented programming, you most likely have heard about composition over inheritance. The concept itself is simple: Whenever possible, prefer to compose objects rather than introducing inheritance.

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Common Code Smells in OOP

Over years of reviewing Ruby code, the same things tend to come up over and over. In this post, I’d like to address some of the most common code smells I find when reviewing OOP code (and Ruby code in particular).

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A Ruby-ish Xmas

Ruby-ish, rubbish… Get it? Anyways, not like Ruby-ish means bad! Quite the opposite!

It’s the day after Xmas and because Ruby is awesome and delivered 2.6.0, we’ll get to play with some of our new Xmas gifts: Kernel#then, Proc#>> and Proc#<<.

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ePubber – generating ePub files with Ruby

ePub is a digital book format which is pretty common nowadays. It’s supported natively by Windows and Android and it’s one of the official formats for digital books in the Apple Books store.

In this post I’ll talk about generating ePub files with Ruby and how to painlessly integrate this feature to your application. I’ll be using a Ruby gem I created called ePubber, which I created to help manage ePub content.

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Writing a Markdown Compiler – Part 3

Have you ever wanted to make your own programming language? Maybe a template engine? A JSON parser? If you have ever built any of those, you might have noticed it’s not exactly easy to get started. We’d like to help with that.

Welcome to Part 3, the final in this series on Writing a Markdown Compiler!
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