A while back, I got fed up with writing code. Not writing code in general, mind you, but I did face a situation where I needed to write a lot of boilerplate code, and having to write such code is a certain way of losing interest in software development. Not …

For this year’s Advent of Code, I use the programming language Nim. I wrote a little bit about Advent of Code yesterday.

For today’s puzzle, I got stuck on something that normally is so trivial that you don’t think twice about it—accessing a variable in the …

The time has come for another December with the alarm clock set earlier than usual! The yearly Advent of Code challenge opened its gates to the first puzzle at 00:00 Eastern Time, meaning 06:00 in Sweden.

This is my 6th year, and I’m looking forward to a …

Co-authors: Andreas Cederström and Sebastian Porling.

Cypress has recently released support for component testing in their 10.0 release. You read the announcement here. We decided to take a quick look and try it out, to gather some first impressions and see how it can fit into our development workflow …

In today’s post, I’ll talk about array covariance in C#, how it hid a bug in code that was covered by a passing unit test (*gasp*), and some ideas for how to avoid such bugs.

What is covariance?

In computer science, variance has to do with how complex …

The JSObject interface in Nashorn makes it possible to expose an object to script code and control in detail how it appears and behaves. The purpose of this article is to explain when the different JSObject methods are called during script execution and in some cases how they should be implemented.

I just learned something about pattern matching and case objects in Scala which I thought I’d share.

TL;DR Using Enumerable.Concat to build a long sequence one item at a time is a particularly bad idea, since enumerating the items will consume a lot of stack space.

A while ago, a customer reported that our .NET application running in IIS started crashing on user registration after …

This blog post answers the question “Why does Uri.AbsolutePath sometimes return an escaped path and sometimes an unescaped path for the request URL in an ASP.NET application?”

I spent some time googling for a possible reason, but search terms like URL/URI, request, path, encoding, and escaping are …

CoffeeScript is “a little language that compiles into JavaScript.” If you haven’t seen or tried it, go check it out! I’ve been using it in a project for a while now, and its obvious advantage over pure JavaScript is that it is very concise and has high expressive …