Enjoy a new video of Canoo Fellow Dierk König in action:

"Scala, Groovy, JRuby, Clojure – Which JVM language is for you?"

In this discussion, panel members Dierk König, Guillaume Laforge (Groovy), Charles Nutter (JRuby), Stefan Tilkov (Clojure) and Ted Neward (Scala) discuss with the audience the pros and cons of the popular JVM-based lanauges Scala, Groovy, JRuby and Clojure in order to attempt to reach a verdict of rank. The panellists try to logically wade through arguments based on the key concepts of each language along with their primary applications and try to resolve clichéd comparisons such as performance.

JAXenter interviewed Canoo Fellow Dierk König on Groovy++. Read the Interview in German or join the Groovy++ Group dedicated to discussions of experimental statically typed compiler for Groovy programming language!

Update: As from now, the interview is also available in English! By the way: What is “Groovy++”?

Dierk König: Groovy + + is an extension of Groovy, which makes Groovy code pretty much as fast as native Java. In addition, you get static type checking plus type inference, yielding the benefits of compile-time safety but without the noise. To use the language extension, you only need one additional jar file in the classpath. Then you can annotate the required code parts – classes for example – with @Typed. The rest happens automatically. This approach takes advantage of Groovy’s ability to hook into the compilation step with AST Transformations. The name “Groovy + +” indicates that it is still Groovy, and therefore encompasses the entire beauty of the language syntax while exceeding the standard characteristics. Read on!

Canoo has released a new sample application at ria-map.net. The application shows typical Web 2.0 interface elements such as tagging or Flickr-like editing fields.

I asked the developer, Jonas Zuberbühler, the following questions on the new Canoo sample application.

SW> What is riamap?

riamap is a Web 2.0 community site that maps the world of Rich Internet Applications. Unlike mere information aggregators on the topic, it builds on user contributions to assemble not only a list of current RIA technologies, but also how they relate to each other.

Users can explore what technologies are available, what they have in common, how they differentiate, what competitors they have and how they complement each other. These relations make up a graph that any user can extend by adding new connections or voting how strong any such connection based on his or her own judgment.

SW> What technologies did you use to build it?

We used Grails for the web application framework and Groovy as it is the perfect partner for implementing server-side logic.
In addition, we used Prototype, Scriptaculous and LivePipe to integrate AJAX features and to improve the user interface.

SW> Why did you select Grails? Why not adapt an existing PHP- or Java-based content management system?

Canoo has a strong footing in Java and Grails is the perfect choice for developing Web 2.0 applications on the Java platform. We can build on our solid understanding of this ecosystem and use all the existing tools for development, deployment and operations. On top of this, Grails provides us with the concise, expressive and interactive development style that modern applications require.

Further screenshots:

To get a login for riamap, sign up here to join riamap. Try out the various Web 2.0 interface features. If you feel like adding information on a RIA technology, enter the details here or edit an existing entry.

Listen to the podcast on Groovy and Grails (in German).