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• Goodbye eZ Systems, hello world! (en)

  by Tobias Schlitt on Tue, 20 Apr 2010 12:15:57 +0200

  It's already all over town, so here comes finally the announcement: Kore and me left eZ Systems officially by the first of April. We already wanted to announce this earlier, but there were still some things in progress, which needed to stabilize before we could do so. Here we go now, with some really exciting news … [Read full post…]

• Python. Good, bad, evil -3-: Flow control exceptions (en)

  by Tobias Schlitt on Fri, 02 Apr 2010 11:43:28 +0200

  My grandma is a wise lady. She told me many useful mantras which I should repeat every night before going to bed. One of these is Never use Exceptions for flow control. And she is so right with this. It is even so true, that every OOP newbie should get this mantra tattooed on his hand. During my experiments with Python I sadly found it violated in a central place: When it comes to implementing an iterator. [Read full post…]

• Automated testing with GUI clients (en)

  by Tobias Schlitt on Sat, 10 Apr 2010 22:45:44 +0200

  As all eZ Components, the eZ Webdav component is highly unit tested. But since WebDAV clients all interpret the standard a little (or more) different, we implemented custom regression tests for this component, based on the PHPUnit framework. Generating these regression tests with each and every supported client was still tedious handwork so far. This needed to be done whenever the servers responses changed due to bug fixes or feature implementations. In this article I present Sikuli, a screenshot based GUI testing framework, which I now used to automate this last part of the testing process. [Read full post…]

• Python. Good, bad, evil -2-: Native sets (en)

  by Tobias Schlitt on Thu, 01 Apr 2010 09:21:47 +0200

  One thing I really liked in Python is the data structure set, which is built into the language core. A set in Python is defined as known from mathematics and beside mathematical use cases, it is helpful in everyday programming live. In this episode of my series on Python, I give you a short insight into how sets work in there, how you can achieve similar results in PHP and why I like the Python approach. [Read full post…]

• Python. Good, bad, evil -1-: Missing brace (en)

  by Tobias Schlitt on Thu, 01 Apr 2010 09:21:47 +0200

  Every programmer should learn a new programming language once in a while. Be it for inspiration or just for fun. After some homework in C# some years ago and quite some Java at university (again), Python was my language of choice. This is the first article in a series I plan to write about what I like in Python, what is disturbing but works out and what is really evil. In this article I give a short overview on my motivation to dig into Python and start with a first topic: The missing braces. [Read full post…]

• PDV → VIP, now on github! (en)

  by Tobias Schlitt on Tue, 16 Feb 2010 08:35:26 +0100

  phpDocumentor for VIM (PDV) is a project which resulted from my efforts to create a comfortable programming environment for PHP in the VIM editor. Since the server which hosted the SVN repository is to be switched off the next days, I finally moved development over to github.In addition to that, I seized the chance to rename the project itself to VIP (VIM integration for PHP). The repository does not only contain the PDV script iself, but also a filetype plugin for PHP, some useful color schemes, a PHP skeleton file, settings for other (related?) programming languages and more. [Read full post…]

• Heap, heap, hooray! (en)

  by Tobias Schlitt on Tue, 09 Feb 2010 13:49:25 +0100

  I recently had the problem that I wanted to retrieve the smallest items from a stream of data. When talking about a stream here, I refer to a data set that I do not want to load into memory completely, since it has quite a few elements. The best way to process such data is a stream approach, where you work always on a single item at a time, iteratively, without loading the full data set.In my special case, I had a database with 140,000 records. The processing of these records could not happen in the DB, since I needed to create vectors from text and perform calculation on these. Basically, I needed to check each vectors distance to a reference vector and keep only the k closest ones.So, what is a good approach to solve such a task? I decided to implement a custom data structure based on a max heap to solve the problem. In this article, I present the solution and compare it to two different other approaches in terms of a small benchmark. [Read full post…]

• Convert from and to OpenDocument (en)

  by Tobias Schlitt on Wed, 23 Dec 2009 13:19:22 +0100

  Yesterday the latest stable release of the eZ Components project, number 2009.2, was rolled. For this release I worked on support for OpenDocumentText (ODT) in the Document component. In this article I show you how you can import OpenDocumentText documents and convert them into any of the supported formats of the component, how to export data into ODT and how to apply styles to the generated documents. You will also see how ODT and PDF can be exported with the very same styling information to make them look almost identical. [Read full post…]

• IPC 2009 - slides and more (en)

  by Tobias Schlitt on Wed, 18 Nov 2009 12:59:23 +0100

  The IPC 2009 was amazing, even if it's still running while I write this blurb. Find my slides in this article, as well as a small resume of the conf. Thanks for the great event! [Read full post…]

• eZ Components Open Book (de)

  by Tobias Schlitt on Mon, 21 Sep 2009 08:08:50 +0200

  Attention: This blog post is in German, due to the fact, that the book is also in German. In short: Kores and my book about eZ Components can now completely be found online, for free. Das von Kore und mir verfasste eZ Components Buch, gibt es jetzt als Open Book komplett online zu lesen. [Read full post…]

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