Blog

9th November 2023

How to retry a Future in Scala

Julien Truffaut

In Scala, the Future type is a versatile tool for managing asynchronous programming. It proves especially handy for tasks like concurrent or parallel programming, such as making HTTP calls to external APIs or fetching data from databases. However…

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26th October 2023

How to convert an Option to an Either in Scala

Julien Truffaut

In Scala, the Option type is commonly used to represent situations where data may be absent. However, it lacks the ability to convey why the data is missing. This is where the Either type comes into play, providing additional context. In this…

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13th October 2023

Top 5 Scala Functional Programming Books

Julien Truffaut

Are you ready to dive into the world of Scala and functional programming? Here are five essential books to guide your journey: 1. "Learn Functional Programming The Fast Way!" by Alvin Alexander Are you a Java, Kotlin, or object-oriented programming…

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9th October 2023

Scala Made Simple For Beginners

Yadu Krishnan

This blog is a beginner-friendly guide to kickstart your Scala programming journey, and it even covers how to incorporate external libraries. If you're relatively new to Scala, I hope you'll find this information helpful. I won't be walking you…

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6th October 2023

How to create Durations in Scala

Julien Truffaut

In Scala, we mostly use the Java standard library to represent time, for example: java.time.Instant for timestamps java.time.LocalDate for calendar dates One exception is duration, which can be used to specify after how much time a computation…

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27th September 2023

Retrying Cats Effect Failures With Ease

Yadu Krishnan

The ability to handle failure gracefully and trying to resolve them automatically is a very important part of modern software applications. We all have worked with services which may fail and we need to retry it at a later point of time. Ensuring…

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25th September 2023

Handling Exceptions using Try/Catch/Finally in Scala

Julien Truffaut

Exception handling is a critical aspect of software development, and Scala provides powerful tools to manage exceptions effectively. In this guide, we'll dive into the Try/Catch/Finally construct. Try/Catch/Finally: An Overview Try/Catch/Finally is a…

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19th July 2023

Comprehensive Data Validation in Scala

Anzori (Nika) Ghurtchumelia

Data validation is not new thing in software development, it’s been here all along and will continue to stay with us. Comprehensive data validation leads to achieving the following goals: Disallowing anyone to represent the illegal state in our apps…

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8th June 2023

Five Books For Expert Scala Programmers

Vlad Kopaniev

If you already mastered programming in Scala, you might want to explore more advanced concepts and techniques to enhance your skills. The journey towards becoming an exceptional Scala developer is one that requires continuous learning and a thirst…

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17th May 2023

Publish a Scala Library using Github Actions in No Time

Vlad Kopaniev

This tutorial will get you through the minimal steps required to publish your Scala library using GitHub Actions. It doesn’t assume the exact artifactory provider or whether it is an internal company lib or an OSS library. The process consists of the…

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10th May 2023

Reducing our Scala CI workflow runtime in half without changing any code

Alexis Hernandez

Keeping a short runtime for CI workflows is ideal, this posts details the results from an experiment we did to speed up our CI workflow for a Scala project integrated with CodePreview . Instead of preparing a dummy project to run the experiments, we…

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2nd May 2023

Accumulate errors in Scala with typelevel cats

Julien Truffaut

When it comes to handling errors, the go-to strategy is to stop all computations after encountering the first error. This is typically achieved through the use of exceptions. While this approach works in most cases, there are times when it isn't…

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13th April 2023

Underrated Scala Features and Hidden Gems in the Standard Library

Anzori (Nika) Ghurtchumelia

🤓 scala.util.Using 🤓 A data structure which manages resources automatically. It lets us focus on the task at hand by giving us a handle on the acquired resource which is then automatically released in the end so that we avoid resource leaks. Let’s…

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6th April 2023

Immutability by Example - Building a Purely Functional Data Validator

Anzori (Nika) Ghurtchumelia

In this blogpost, while evangelising immutability we end up creating a useful reusable piece of code as a side effect which addresses the limitations of Either +E, +A in Scala standard library with respect to performing accumulative data…

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4th April 2023

Top 10 pattern matching tips in Scala

Julien Truffaut

One of the most convenient features of Scala is its ability to pattern match on data such as case classes, enumerations or litterals. In this article, I will present my 10 most useful tips for working efficiently with pattern matching. Most tips will…

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3rd April 2023

Functional Error Handling in Scala

Anzori (Nika) Ghurtchumelia

This is an article about Functional error handling which will Either turn out to be Success or Failure . In my opinion it is Right to say that you have None to lose and Some to gain if you read it. So I suggest you to at least Try and…

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21st March 2023

Functional Data Modeling in Scala

Anzori (Nika) Ghurtchumelia

Data engineering, Big Data, Data lakes, Databases, Data warehouses, Data streaming, Data pipelines… How many such terms do you need to hear until you’re convinced that we are indeed living in the age of Data? It is pity that the majority of…

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20th March 2023

Functional Programming anti-patterns in Scala

Vlad Kopaniev

Neil Gaiman Google can bring you back 100,000 answers. A librarian can bring you back the right one. This statement still holds in the new era of AI-driven assistants like ChatGPT. However convenient they might be, AI assistants still need to catch…

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20th March 2023

Hiring Scala Engineers

Alex Garella

Scala, a versatile and expressive programming language that combines the best features of object-oriented and functional programming, is increasingly in demand for various projects. Hiring the right Scala engineering talent is vital for the success…

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14th March 2023

Enum serialization in Scala

Julien Truffaut

Enum serialization in Scala Enumerations are one of the most convenient features of the Scala programming language as they allow precise modeling of business domains. However, we eventually need to serialize our Scala objects, for example, if we want…

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13th March 2023

Typeclassery in Scala

Anzori (Nika) Ghurtchumelia

Typeclassery — A sure way of making generic programs context aware Sooner or later you will stumble upon the concept of type classes while traversing your Scala journey. Type class is not something peculiar about Scala, rather it’s a special design…

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12th March 2023

Demystifying Variance in Scala

Anzori (Nika) Ghurtchumelia

Demystifying Variance magic in Scala Invariant? Covariant? Contravariant?… What the F[_] ?! Scala programming language has an extremely powerful feature called “Variance”. Variance, if used properly can guarantee us to benefit from the increased…

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16th February 2023

Concise enumeration in Scala

Julien Truffaut

In this blog post, I would like to share a simple trick to create a concise enumeration in Scala. The Problem We want to create an enumeration and associate each possibility to a single value, e.g. map the object Euro to the String EUR or the object…

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22nd January 2023

Implicit parameters when to use them? Part 2

Julien Truffaut

In my previous blog post , I presented the way that implicit parameters work, as well as one of their design patterns: the environment pattern. Today, I will present a second use case for implicit parameters: the typeclasses. Let’s say that we are…

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16th January 2023

Implicit parameters when to use them? Part 1

Julien Truffaut

Implicits are one of the most feared features of the Scala programming language and for good reasons! First, the concept of implicits is fairly specific to Scala. No other mainstream programming language has a similar concept. This means that new…

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14th September 2021

Which companies use Scala?

Marcin Krykowski

Here at ScalaJob.com we help all kinds of companies hire Scala developers all the time. A question we get asked a lot is: How widespread is the use of Scala in industry? One way to answer that question is by determining how many companies are using…

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19th June 2021

How to Best Prepare for a Scala Job Interview

Marcin Krykowski

First of all, you might want to ask a question “Should I even prepare for the interview?”. And my answer is pretty simple - hell yeah. In this post I won't cover the obvious things like getting proper rest, not being late for the interview and making…

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19th March 2021

What is the difference between object and class in Scala?

Marcin Krykowski

In this article we will briefly describe the difference between object and class in Scala. A class is a definition, a description. It defines a type in terms of methods and composition of other types. An object is a singleton instance of a class…

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