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Groovy 1.8.0 – meet JsonBuilder!

Groovy 1.8.0 released in April brought a lot of new features to the language, one of them is native JSON support through JsonSlurper for reading JSON and JsonBuilder for writing JSON. I ...
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Simple but powerful DSL using Groovy

In one of my projects we had very complicated domain model, which included more than hundred of different domain object types. It was a pure Java project and, honestly, Java is very ...
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Student Questions about Scala, Part 1

Preface I’m currently teaching a course on Applied Text Analysis and am using Scala as the programming language taught and used in the course. Rather than creating more tutorials, ...
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Apache Camel – A little Scala DSL example

So we have a Scala DSL in Apache Camel for many years now, and I guess its about time I wrote a little blog entry about this (has been on my todo list for a while). So the Scala DSL ...
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Variations for computing results from sequences in Scala

Introduction A common question from students who are new to Scala is: What is the difference between using the map function on lists, using for expressions and foreach loops? One ...
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Implicit Conversions in Scala

Following on from the previous post on operator overloading I’m going to be looking at Implicit Conversions, and how we can combine them to with operator overloading to do some ...
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Scala: Working with Predicates

I love me some Scala. Actually, since it’s now my day job, I love it all the time. It combines the short, expressiveness that I prized in Python with a rich library base (thanks ...
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First steps with Scala, say goodbye to bash scripts…

Those who know me are aware that I’ve been following play framework, and actively taking part of it’s community, for a couple of years. Playframework 2.0 is right around the corner, ...
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Using Groovy – A soft introduction

Groovy is an object-oriented programming language for the Java platform and can be used as a scripting language. Most of us but instead of using Groovy alone, we use Grails (web framework ...
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Even simpler scalability with Akka through RegistryActor

Let’s imagine, your system is deployed on one node, where you running actors that literally draining out the resources. You want to add some more nodes running actors of the same ...
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