Semigroups and Monoids in Scala
This article is about Monoids and Semigroups as a gentle introduction to functional abstractions and to how the Cats library works.
Recent posts
N-Queens in Scala: How to Approach Algorithm Questions
Learn how to approach a Google-style algorithm interview question in Scala with pure functional programming.
Organizing Services with ZIO and ZLayers
ZIO layers (ZLayers) help us structure our complex services into modules that are independent, composable and easy to understand. Let’s take a look.
Value Classes in Scala
An ad-hoc type definition technique for eliminating bugs which are hard to trace, with implementations in Scala 2 via newtypes and in Scala 3 via opaque types.
Mutability in Scala
Although frowned upon by FP purists, creating and managing mutable data structures is important in any language. Scala has some first-class features.
Idiomatic Error Handling in Scala
Error handling is likely one of the most frustrating part of programming, and in Scala, there are better and worse ways to do it. Let’s take a look.
Match Types in Scala 3
Scala 3 comes with lots of new features. In this episode, match types: a pattern matching on types, and a tool for more accurate type checking.
How to Sort Lists in Scala with Tail Recursion
Sorting lists might be a “school” problem, but in this article I’ll show you how to use proper FP, tail recursion and more, using this popular example. Might...
Algebraic Data Types (ADT) in Scala
Every developer using Scala meets the acronym ADT sooner or later. In this article, we will try to answer all of your questions about ADTs.
Objects and Companions in Scala
This article is for the starting Scala programmer: an introduction to singleton objects and companions in Scala, what they can do, and why and where we shoul...