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Year: 2011

Visualize changes in your repository

Visualize changes in your repository

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As you perhaps know, there exists a very interesting project on Google code, with which you can visualize the activities on your repository: Gource. Getting started It supports Git, Mercurial, Bazaar and SVN. There is also a way to visualize the changes in a repository of a Microsoft Team Foundation server: GourceTFS. Luckily, in one of my current projects I use Subversion as repository. So it is very easy to visualize the log. Just go in the command line to…

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Enums and inheritance in .Net

Enums and inheritance in .Net

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In one of my current projects I had the following code (I simplified the code a bit): public string ConnectionString { get { switch(this.Importer) { case Importer.SqlServer: return "Server=localhost;Database=Northwind"; case Importer.SqlServerOleDb: return"Provider=SQLOLEDB;Data Source=localhost;Initial Catalog=Northwind"; default: throw new NotSupportedException( string.Format("Importer {0} is not supported yet.", this.Importer)); } } } After running the code coverage tool (dotCover from JetBrains) I received the following picture: First idea So, my code was clear and understandable, but obviously not fully tested (green: covered by tests,…

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Do frameworks kill design skills?

Do frameworks kill design skills?

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Software design is one of the most important skills a software engineer should have. But what is software design exactly? If you search for a definition you find something like this: Software design is a process of problem-solving and planning for a software solution. After the purpose and specifications of software are determined, software developers will design or employ designers to develop a plan for a solution. It includes low-level component and algorithm implementation issues as well as the architectural…

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Hunting performance issues

Hunting performance issues

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Recently I received the lead over a performance optimization project for a software product.  It isn’t something extraordinary for a software architect, because as a software architect you have to know what’s critical for a software system in a specific environment. Some of my co-workers may now smile a bit: I always say that you shouldn’t by default design your software based on performance considerations. The code should be simple, understandable and correct. My thesis was and is "good code…

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