db4o Developer Community

Hi! A very interesting PDC talk (by Anders Hejlsberg) about the future of C#. As a teaser, just some subjects covered in the this talk: More dynamic constructs Optional / Named arguments Concurrency If you work with C#/.Net you can't miss this one! Adriano

C# 4.0: Meet the Design Team Have fun Adriano

Hi! Today I got an ''job opportunity'' from one of jobs sites I'm registered (no, I'm not looking for a new job, I just didn't unregistered) with a really intriguing subject: A skilled professional with 3 years of experience in C, Sharp and VB.NET. I have to admit that I do know C and also a little of VB.NET, but I have never seen SHARP :) Ok, ...

In my last post I proposed to derive field names from a property accessor in order to gain type safety and compiler support when configuring some aspects of D4bo. So, given the following class:public class Test { private int _age; public int Age { get { return _age; } set { _age = value; } } }we could use the following ...

As of today, Db4o uses strings to reference fields in some scenarios such: SODA queries Configuration See the sample bellow: IConfiguration cfg = Db4oFactory.NewConfiguration(); cfg.ObjectClass(typeof(Test)).ObjectField(''_age'').Indexed = true;IMHO, using strings in these situations is sub-optimal as: Such solution relies in ...

In this post we'll implement a very basic Linq Console application that supports ''ad hoc'' queries allowing users to enter Linq queries and run them against a db4o database. Our main goal is to show how such mechanism can be implemented on top of Linq/Db4o. That said, let's play with the application for a while and them dig a little bit in its ...

Visual Studio 2008 has been released (Yep, I'm downloading it right now :) Niiice.

As a software developer, one common pattern I've found over and over again is the typical parent/child relationship. In this post I'll present you a program (a WinForms based application) that lets you create, store and delete objects (representing tasks) that follows this common structure in a db4o database and take the opportunity to show how a ...

As I've said in my last post, I'm reading C# 3.0 specification. Well, it's amazing what you can learn when you do take the time to learn more about the tools (in this case, the language) you use all day long :). This time I've find out that it's possible to use reserved words as identifiers! Amazing! (and of course, dangerous as it make it ...

Hi, Other day I was poking around C# 2.0 documentation and noted a different operator I had never seen before, ?? so I thought with myself: what is it good for? Well, after reading the documentation (remember, RTFM :) I couldn't believe I didn't known this before! The ?? operator is a binary operator that checks the left operand against null. ...