A Rubyist's Guide to Big-O Notation

Big-O notation gives you crucial insight into why your apps aren't as fast as you'd like them to be.

Schrodinger's Ruby array

When can a single array instance in Ruby both be empty and contain items simultaneously? Read on, and find out!

How to build a network stack in Ruby

Today we’re going to implement UDP using sockets. We’re going to read raw ethernet frames, IP packets and UDP datagrams and use bitwise operations to tease data out.

Your first Progressive Web App on Rails

This tutorial shows how to make Progressive Web App on Rails using the serviceworker-rails gem.

Why Do So Many Startups Use Ruby on Rails?

It’s widely known that RoR has become an extremely popular web framework. Here are top five reasons why you need to use RoR if you’re starting an ONLINE startup.

Testing Rake Tasks with RSpec Feature Specs

There's nothing worse than getting into the office, only to find out that one of the jobs threw an error and didn't complete. You get to a point where testing all the pieces in isolation just isn't good enough. I need to be confident that all of the pieces will work together.

How I bombed my technical interview in 4 easy steps

Hi everyone, I am a student at Launch School. I recently crashed and burned in my 149 live coding assessment and I wanted to share my experience.

Constraints only work if they hurt

We run on 6-week budgets for most major product work at Basecamp. It’s not that everything has to done in that time, but the self-imposed constraint makes us try. It’s not a deadline, mind you, but a budget.

Code Smells

Developing your "code nose" is something that happens early in your programming career, if it's going to happen at all. I combined all the documented code smells I could find into this reference; most of these smells should be familiar to you.

Gemsmith

A command line interface for smithing new Ruby gems.