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Binary websockets with Play 2.0 and Scala

In a recent article I showed how you can use webrtc, canvas and websockets together to create a face detection application whose frontend runs completely in the browser, without the ...
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Exposing Functionality Over HTTP with Groovy and Ultra-Lightweight HTTP Servers

I needed a quick and simple way to enable some users to query a table and figured out that the easiest solution was to use an embedded, ligthweight HTTP server so that the users could ...
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Play framework 2 quicktip: Scala console

When I first started to play with Scala, I was amazed by the Scala interactive interpreter (also known as REPL, read-evaluate-print-loop). It was one of those things that you never ...
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Student Questions about Scala, Part 2

Preface This is the second post answering questions from students in my course on Applied Text Analysis. You can see the first one here. This post generally covers higher level questions, ...
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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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