Author Archives: Christian Papauschek

Protected: Data Analysis Coding Challenge

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A crossword puzzle maker written in Scala.js

Lately I’ve been trying out Scala.js and Scala 3. As a test, I have taken an old project of mine – a crossword puzzle generator, and compiled it with Scala.js. This is a CPU-intensive application, as it tries to create crossword … Continue reading

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Protected: iOS Coding Challenge (Swift )

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Protected: Backend API Coding Challenge

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Protected: Android Coding Challenge (Kotlin)

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Protected: Country search coding challenge (Frontend Developer)

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Why and How we are using Scala at Journi

Last year we started building our web/mobile startup Journi, and I considered 3 different backend languages before finally settling on Scala: PHP. I didn’t want to continue working with a language that had grown into a monstrosity. C# .NET. Solid, … Continue reading

Posted in Play framework, Scala, Startups | 2 Comments

Scala Akka Workshop – Evolving a Robot in an Actor Cluster

It is quite extraordinary what is possible nowadays with a group of interested developers and powerful tools such as Scala and Akka. Three months ago we had our first Akka Workshop here at the Vienna Scala User Group (VSUG), in … Continue reading

Posted in Akka, Play framework, Scala, Slick | 6 Comments

Protected: World map coding challenge (Android)

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Akka Workshop Cheat Sheet

Contents Akka Cheat Sheet Robot Cheat Sheet Scala Cheat Sheet (List handling) Akka Cheat Sheet Creating an actor system (usually one per machine) val system = ActorSystem(“cluster”)   Defining an actor: class MyActor(myArg1: String) extends Actor { // initial actions … Continue reading

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