Writing command-line apps in Ruby

In order to write a first-class command-line app, you have to understand a lot of details like arguments, environment variables, STDIN/STDOUT, and more. This post is my humble attempt to cover most of these details and bring together everything you need to know in one place.


2015 Honeybadger Year in Review

I'm always amazed when I think about how much our tiny team of engineers is able to accomplish in a year. So I thought it'd be fun to make a highlight reel of the things we're proudest of this year.


How HTTP headers get passed from nginx to your Ruby app

Whether you use rails, Sinatra, or Lotus, you don't really have to think about how cookies and other headers pass from nginx or apache, to the application server and into your app. We're going to examine this journey in a little more depth. Because it turns out that the story of headers contains a lot of interesting information about the history of the web.


How does ARGV get set in Ruby?

You probably know that Ruby sticks any command-line arguments into a global array called ARGV. But why the heck is it called ARGV? It's an interesting history lesson that highlights Ruby's origins in C.


Announcing OpsGenie Integration

We are super excited to announce that Honeybadger and OpsGenie now work together. Now you can route Honeybadger alerts through to the developer on-call!


Working with Fractions and Rationals in Ruby

Most people are able to think about fractions a lot more easily than they can think about arbitrary decimal numbers -- when was the last time you measured out 0.65739 cups of flour? This post will discuss how to use ruby to work with fractions, and how you can convert gnarly floating point numbers, to nice fractional approximations.


Level Up Your Command-Line-Fu With Ruby

To really master the command line you have to master dozens - if not hundreds - of small utility programs. Fortunately, it's possible to replace a lot of these single-purpose tools with a general-purpose programming language like Ruby. This post will show you how you can use your Ruby skills to level up your command-line game.



Spying on running Ruby processes

Did you know that it's possible to log all method calls as they occur in a running process in real time? How about injecting code to be executed inside of a running process? You can – via the magic of the rbtrace gem.



Slicing and Dicing Ruby Enumerables

Have you ever needed to group items in an array, or lines in a file? In this post we'll discuss a few often-overlooked Enumerable methods that let you do just that.



How Ruby Interprets and Runs Your Programs

In this post we'll follow the journey of a simple program as it's lexed, parsed and compiled into bytecode. We'll use the tools that Ruby gives us to spy on the interpreter every step of the way.


Understanding `self` in Ruby

A lot of problems faced by beginning Rubyists are caused by not understanding `self`. In this post we'll take a deep dive into `self` under conditions both common and uncommon.


Cool Ruby Regex Tricks

Ruby supports using regex in lots of interesting ways that go beyond the basic `String#match` method. In this post I cover a few of my favorites.





Multiple Levels of Subnavigation with Jekyll

In this post, we'll discuss how to separate an HTML document into logical sections based on heading tags. I'll all also show you a cool trick for rendering arbitrarily-deep subnavigation trees using Liquid templates.