Instead of explaining the abstract theory behind monads, I’ll just show you some Java code that you already understand. And using this practical approach you’ll realize that you’ve in all likelihood already used monads a few times. Oh and if you prefer to listen to me instead, this post is…

Tabs or spaces? Every programmer was at some point confronted by this career-defining choice. But with this post today I’ll expand the horizon and finally settle the debate. So let’s go over the different ways to indent your code and their pros and cons. All of the pretty code images…

Kotlin has lots of advantages over Java, but one that I find easily overlooked is their two special classes: data classes and inline classes. Data classes seem at first just like some minor time save during development, but I believe they can also lead to better code. …

It needs to help! — I see so much focus on how to create the perfect piece of software: easily maintained, extremely extensible, blazing fast and with beautiful idiomatic code. And all that is fine, but it’s really just the last step when creating a program or feature. The perfect software that noone uses I think we’ve all been there: You’re…

A Detailed Look — When Java first introduced records as a preview in Java 14 and later released it with Java 16, it reminded many of Kotlin’s data classes. While they address the same problem in a very similar manner, there are a few differences in how they are handled. I’ll list them roughly…

Untangling the mess of Futures — In Java 8 CompletableFuture was introduced to finally bring a better way to work with asynchronous logic into Java. Meanwhile Guava has created its own solutions for this problem. Now, which one should you use? First let me start by pointing out that Guava has many classes that interact with…

ImmutableCollection vs Collections.unmodifiableCollection and more — Guava is one of if not the most popular Java libraries. But it has been around for a long time and Java has since implemented many features comparable to those found in Guava. The question is now, which one did it better? Immutable Collections Guava has immutable implementations for all of Java’s…

For Whom are Exceptions anyways? — I’m currently in the progress of creating a REST API with Spring and a few other libraries. Part of that is, of course, to properly handle all exceptions that might occur and present them properly to the API user. And while trying to exhaust all of the possible exceptions, I…

Save time when implementing PR fixes with this neat script — Let’s say you’ve submitted a pull request with nice atomic commits and your colleagues have found a few improvements. They are easy to implement, but if you want a nice history, you now have to figure out to which commit you should add them. Usually that’s just the last commit…