Scalac's blog

Why Monix In this short blog post – in just 10 minutes or less –  I’m going to attempt to present what Monix library is and try to convince you why you really need to get to know it. Formerly known as Monifu, Monix is a library for asynchronous programming in Scala and Scala.js It contains several […]

In this post, we will look at how primitive Scala types such as Int and Long are represented down to the bytecode level. This will help us understand what the performance effects of using them in generic classes are. We will also explore the functionalities that the Scala compiler provides us for mitigating such performance penalties. Furthermore, we will […]

Seasoned speakers have a saying “there are two groups of people: those who use speaking skills to improve their lives and those who are too scared to seize the opportunity”. I think it hits the mark. Communication skills are in high demand in every industry, from marketing to IT. For us, developers, good communication and […]

Interface Builder (IB for short) was announced as a part of Xcode 4 in June 2010, at the WWDC. Since that moment, Apple has been promoting and improving it with each significant Xcode update. At the moment IB is a well-established solution which comes with every new iOS project created in Xcode. However… recently articles […]

In this post I will try to present what is GraphStage in Akka Streams. My goal is to describe when it’s useful and how to use it correctly. I will start with outlining key terminology, then proceed with simple example and after that the main use case will be covered. For the latter the most upvoted issue of akka-http […]

Type classes in Scala Type classes are a powerful and flexible concept that adds ad-hoc polymorphism to Scala. They are not a first-class citizen in the language, but other built-in mechanisms allow to write them in Scala. This is the reason why they are not so obvious to spot in code and one can have […]

A very common scenario in many kinds of software is when the input data is potentially unlimited and it can appear at arbitrary intervals. The common way of handling such cases is using the Observer pattern in its imperative form – callbacks. But this approach creates what’s commonly called “Callback Hell”. It’s a concept basically […]

For some time now Spark has been offering a Pipeline API (available in MLlib module) which facilitates building sequences of transformers and estimators in order to process the data and build a model. Moreover, Spark MLlib module ships with a plethora of custom transformers that make the process of data transformation easy and painless. But […]

Part of the success of modern application is targeting it globally – all over the world. It isn’t possible to run such application on a single machine, even with most powerful hardware. Definitions like Distributed computing or Reactive applications were born in the process of IT globalization. Nowadays, applications run on multiple virtual machines distributed over multiple physical machines […]

When you live far away from some of your best friends, you want to find some reasonable ways to stay in touch. After a while, we found out that social media and instant messaging apps are not really an answer to our needs, so we decided to give a chance to something that easily engages […]