DiversIT Europe
Nov 3, 2016 Video - Sharing 2 years experience using Scala in a real project by a Java team Presentation on JFall 2016
In Januari 2015 we started on a new project using Scala with a team which had hardly any Scala experience. In this talk I’d like to share insights and experiences during a 2-year journey of using Scala/Akka in a real project, how the team learned Scala and slowly found it’s way into functional programming. It will include some best practices, pitt falls and lessons learned in both using Scala and the interoperability with Java and Groovy. Some of the technologies we used are Akka, Spray, Finatra, Json4s, Neo4j.
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Tags:conference jfall presentation scala
Sep 30, 2016 Creating presentations ... Early november I am presenting both at the Dutch JFall and Devoxx BE conferences. This year I wanted to get started early, so I sat down and … “Ok, what am I going to use to create the presentation in? Keynote? Mmm … If I want to present this at different conferences with a matching style, maybe I need something different.”
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Tags:markdown presentation-tools
Jul 13, 2016 Running Docker on Pine64 In the beginning of this year I backed the Kickstarter for Pine64. The Pine64 is an interesting little board with a quad core All-Winner 64-bit CPU, lots of IO, a gigabit network interface and up to 2GB memory.
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Tags:docker pine64
Jun 29, 2016 Talking to my home My home is mostly automated using KNX. Yes, that’s a bit expensive, but it’s wired, very flexible, it always works and is a truly open standard so I can choose from many manufacturers. I always get my hardware from http://knxgroothandel.nl.
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Tags:homeautomation iot openhab
May 16, 2016 Presentation - Gettings started with cool IoT stuff Presentation on NextBuild 2016
There have been plenty of session already about Raspberry Pi’s and Arduino’s, but that’s old-school already. I want to show you what cool devices are currently available or will come available shortly and how to get started with those. One of the devices is the ESP8266. I’ll explain what hardware you need to get started and I’ll demonstrate how to quickly start developing with a ESP8266, from a basic blink to an Over The Air update of your firmware and connecting it to the cloud. Other devices I’ll try to cover are the RedBear DUO, a wifi and Bluetooth-LE device which I just got in today, and Riots.
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Tags:conference iot nextbuild presentation
Jan 29, 2016 Testing Neo4j 3 with embedded server with Bolt Together with colleague Stijn van Drunen we’re working on a project where we’re using Neo4j 3 since we want to use Neo4j’s new binary Bolt driver.
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Dec 11, 2015 Building JavaCPP presets for OpenCV 3 for Raspberry Pi (linux-arm) To speed up image processing in a Java/Scala application on a Raspberry Pi, we resorted to ‘opencv’. OpenCV already provides native Java binding. The disadvantage of this is however, that you manually must load those native libraries in your Java application.
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Tags:java javacpp opencv raspberry-pi
Nov 13, 2015 Video - Fast REST API building with Unfiltered Presentation on Devoxx 2015 about Unfiltered
In need of building a new api fast? Come and have a look at Unfiltered, a Scala Http request toolkit with which you can create and run a rest api in just 4 lines! During this Quickie I’ll demonstrate some of the usages of Unfiltered, from some simple endpoints to a fully Akka clustered application.
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Tags:conference devoxx presentation rest scala
Sep 4, 2015 Chaining rejection handlers To serve some resources via Spray, it’s as easy as using the ‘getFromFile’ directive. If you want to fall back to an alternative because the file is not available, you can define a RejectionHandler to serve an alternative file.
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Tags:scala spray
Jul 8, 2015 Using Akka Http to perform a Rest call and deserialise json I have been playing with Akka Streams and Akka Http to create a flow to get some data from a public Rest endpoint and deserialize the json using Json4s.
Since there are not that many examples yet, and documentation only has a few examples, I’m sharing my little app here.
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Tags:akka akka-http akka-streams json