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SCRUM

Backlog
Backlog

We are working with SCRUM now for more than a year. But I did my first SCRUM training a couple of days ago. Was a very interesting training with a lot of nice people. I the three days duration of the training, it never got boored.

One picture was especially impressive: it shows the product backlog as an iceberg. The story is the following.

The product backlog consists of epics (very large user stories), user stories and grains of sand. It is not necessary to detail and estimate epics until they become part of the release backlog.

And it is not necessary to detail user stories into grains of sand until they become part of the sprint planning. This picture is very nice and easy to memorize. Thank you DasScrumTeam.

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iPhone development

Triangle
Triangle

Since I have an iPhone, my wish was to create my own iPhone application. But not so easy as I immediately saw.

First, you have to have a MAC where you can install the iPhone development studio. This was the biggest problem. I buyed an old MAC on ebay but found out, that the MAC I had bought was to old. And after three months it died.

Months later I had the opportunity to buy a Netbook from a friend. And the guy had installed MAC OS on this Netbook. So the biggest hurdle was taken.

The rest was quite simple. For an experienced developer it is not so hard, to learn a new development language within a few days. And after two week or so, I were able to publish my first application.

The application is similar to something I already did years ago for PCs. It is a software which draws a triangle. You can move the corners of the triangle and the most important special points, lines and circles of a triangle are drawn.

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Code Complete

code complete
code complete

Code Complete is one of the best and the absolutely interessting books I have ever read about Software Development. Here you can read everything from design to development, refactoring, documentation and so on. If you want to become a good developer, it is a must to have read this book.

Steve McConnell seems to have a lot of experience in the whole field of software development. An he is a good writer. He never looses his humor. More than 800 pages of fun.

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Mandelbrot

Mandelbrot
Mandelbrot

A long time ago I was impressed from this bizarre images made of the mandelbrot set. And a few weeks ago I developed a screensaver which draws different details of the mandelbrot set.

Meanwhile I know a little bit more about this image and it is much more fascinating than ever before. I invested at lot of time to get this screensaver running. But now it works. It randomly selects a part of the currently painted image and zooms inside this part. The zooming goes on until the computer is not able to calculate more detailed information.

You can download the screensaver Mandelbrot and copy the file into the system directory. Then select the screensaver in the desktop property screen and make some odd settings there. You will enjoy it and be impressed of the different images of the Mandelbrot set.

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Triangle

Triangle
Triangle

When I attended school and had some lessons about the triangle I was deeply impressed from this odd figure.

And since I tried some calculations with vector analysis my idea was to develope a screensaver which randomly draws a triangle and calculates and paints all important points, lines and circles of the triangle.

You can download the screensaver Triangle and copy the file into the system directory.