Recently, I rolled onto a mobile project with a web back end written in Ruby on Rails. This was my first experience with both Ruby and Rails. The first feature work I did in the back end involved adding an administrative portal using Active Admin. I found myself negotiating the learning curve of not only […]
Monitoring accounts receivable (AR) is something that all companies do. Generally, this is a function of the accounting department. The challenge is: Who is responsible for following up when AR is past due?
Ruby makes it easy to extend its built-in classes, which can be very convenient and lead to more readable code—but it can also be dangerous. This practice, known as “monkey patching,” is common in the Ruby world, and since Ruby 2, it’s been possible to mitigate some of the risks using refinements.
The number-one, easiest way to make Ruby threads communicate and synchronize is to use the built-in Queue class. You can even see this in the Ruby docs: This class provides a way to synchronize communication between threads. Unfortunately, a Queue isn’t always what we want. So, how can we build our own primitives that are […]
In one of my previous posts, I wrote a queue implementation that would let you provide a timeout to the pop method. Unfortunately, it has a bug caused by spurious wakeups. Here is the fix along with an explanation of how you can avoid this sort of problem in the future.
I recently found myself needing to return early from a block passed into a method in Ruby. Although the way to do this is fairly simple and obvious in hindsight, it seemed to surprise some of my Ruby-enthusiast colleagues. I decided to write this post in the hopes that it’s interesting to others.
In my dabbles into game development, I’ve loved the expressiveness of Ruby, but longed for the performance of a compiled language. (Anyone else in that boat?) I recently heard about a newer language that promised “The beauty of Ruby with the speed of C.” Its name is Crystal.
In this post, I will review options for parsing Excel files using Ruby. I’ll discuss the different types of Excel files and introduce some of the Ruby libraries that exist for working with them. Note that I focus mostly on reading Excel files in this post, but there is some discussion around writing/updating them as […]
For a recent project, I wrote a Ruby script to upload my team’s hours to a Google Spreadsheet. From time to time, I would have to manually edit the hours on the spreadsheet, so I left a note on those cells to remind myself that I changed the values. I needed my script to see these […]
In yesterday’s post, I introduced monadt, a gem that adds algebraic data types (ADTs) and monads to Ruby. Today I’m going to dive into how monadt provides monad support, specifically the imperative-looking syntactical sugar you get in languages like Haskell and F#.