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Last year, Rickard Öberg unveiled his Qi4j project. Qi4j is a framework for domain centric development thru Composite Oriented Programming (COP). Composition of larger objects from finer grained fragments is one of the core principles of this paradigm, and Qi4j does it by piecing together mixins to form instances.
Some of you might be familiar ...

My last post on Java generics and the Repository pattern got a bit of interest. Judging from the feedback I got, I feel the need to elaborate on the Inversion of Control part of this. As some readers pointed out, Google’s Guice container employes super type tokens to support generics to some extent. The IoC example I gave in my previous post ...

Whenever I stray off the beaten path of Java generics, I instantly miss C#’s generics implementation. Earlier today, Java’s type erasure erased a few good hours of productivity whilst I was doing a spike on bringing the IRepository<T> experience to Java. In C# you can get the class of any generic type argument in a straight forward ...

One of the challenges I have experienced when giving talks or blogging about domain specific languages is that developers are a little reluctant to writing code in languages they are unfamiliar with. This holds true even if the DSL in question is an external DSL based on commonly available languages such as Boo, Ruby, Groovy or ...

Fredrik Kalseth posted a notice about his talk for the Norwegian .NET User Group’s (NNUG) Vestfold’s chapter, so I thought I’d follow in his footsteps to inform the world about my speaking engagements next week. On Tuesday February 26th I’m giving a talk on language oriented programming with .NET for the Oslo chapter of ...

Whatever language you write in, your task as a programmer is to do the best you can with the tools at hand. A good programmer can overcome a poor language or a clumsy operating system, but even a great programming environment will not rescue a bad programmer. Kernighan and Pike When I attended Richard Öberg’s talk on Qi4J at the Oslo ...

There is an article in this week’s Economist referring to a paper by Dr. Mark Pagel et al published in the latest edition of Science on (spoken) languages evolving in punctuational bursts. The key point in Dr. Pagel’s research is that evolutionary change happens in sudden jumps separated by long periods of creeping evolution. The ...

A while a go Neil Gafter proposed extension methods as a new feature in Java 7. This is an interesting proposal and if it is implemented, it would make Quaere even better. I'll skip the tired list sorting example from the discussions and think out loud about how Quaere would benefit from extension methods. First lets look at some simple features. ...

Casper wrote an interesting comment to my screen cast about LINQ and Quaere auto completion which deserves an answer in the form of a blog post. As the title suggests you’re in for a ride through many different concepts in .NET, Java, LINQ and Quaere amongst other things. Fasten your seat belts! For those of you who didn’t bother ...

Some ever recurring discussions around Quaere are “this isn’t really LINQ for Java” and “cool, but this isn’t truly type-safe”. In this post I’ll dive into these topics by explaining how LINQ works… LINQ to Objects The language integration in C# 3.0 and Visual Basic 9 makes LINQ very readable and ...