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Fake system clock pattern in Scala with implicit parameters

Fake system clock is a design pattern addressing testability issues of programs heavily relying on system time. If business logic flow depends on current system time, testing various ...
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How does Scala work it’s Magic?

Hello everyone, today we’re gonna talk a little about the said “automagics” of Scala, how it does what it does, and generates Java code in the end. Because if you think about ...
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Call response WebSockets in Play Framework

I got a question from a Play user about implementing call/response WebSockets in Play Framework. This is not something that comes up that often, since it means using WebSockets to do ...
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ElasticMQ 0.7.0: long polling, non-blocking implementation using Akka and Spray

ElasticMQ 0.7.0, a message queueing system with an actor-based Scala and Amazon SQS-compatible interfaces, was just released. It is a major rewrite, using Akka actors at the core and ...
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Various ways to run Scala code

For running example in this tutorial, make sure that, you have latest Java distribution and Scala distribution installed on your machine and environment variable SCALA_HOME points ...
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Real-time charts with Play Framework and Scala: extreme productivity on JVM for web

Being a hardcore back-end developer, whenever I am thinking about building web application with some UI on JVM platform, I feel scared. And there are reasons for that: having experience ...
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Typed ask for Akka

Akka is a great tool for writing distributed applications. One thing that always surprised me though is that while being based on Scala, which is a very type-safe language, the elementary ...
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How could Scala do a merge sort?

Merge sort is a classical “divide and conquer” sorting algorithm. You should have to never write one because you’d be silly to do that when a standard library class ...
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Lazy sequences in Scala and Clojure

Lazy sequences (also known as streams) are an interesting functional data structure which you might have never heard of. Basically lazy sequence is a list that is not fully known/computed ...
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Advanced routing in Play Framework

We frequently get questions about how to meet all sorts of different routing needs in Play Framework. While the built in router is enough for most users, sometimes you may encounter ...
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