There is a helpful article on how to make Nepomuk a lot faster by switching its default storage backend to Sesame2:

• Pimp my Nepomuk

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A large part of SW development is representing the information as RDF for persistence and interoperability. It’s usually done with lots of the glue code to map the programming object model to RDF triples and vice versa.

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There are some amusing things in Linux which are hard to discover because they are invisible. Entering Unicode characters and sequences with a Compose key is one of those hidden features which can make user’s life much easier.

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Java is great platform for component development but there are some odd and counterintuitive things on the way. One of these hidden pitfalls waiting for a developer who is going to replace default system ClassLoader with a custom one.

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Because of its crossplatform nature (“run anywhere”), Memoranda has no default “installer” to be embedded into user’s desktop environment automatically. But it is pretty easy to integrate it into that environment. Let’s see how to do that in KDE case.

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It is nearly impossible to buy a PC keyboard without a key with the flag icon, which is usually referred as a “Win-key”. It is, of course, a question if there are any logical reasons to stamp a particular private OS logo on a universal hardware, but I am not going to discuss it right now. Instead of that, let’s see how to use this additional key for improving Linux user productivity.
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I had nice last weekend gathering new harvest of apples, drinking fresh apple juice and playing with SuperKaramba widgets – a good opportunity to take a sort of “recreational programming”. Perhaps all modern KDE users know those nice resource eaters eye-candies which are living right on the desktop surface and displaying the clocks, calendars, weather forecasts, system monitors and so on.

Instead of developing some Yet Another Big Animated Clock, I decided to write something practical. What I’d like to have is a widget which would ask my e-mail client (KMail) for the headers of the latest unread messages to show them on the desktop.
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This article starts a “Tips & Tricks” serie of “Chronicles” which is a result of my comeback to heavy coding. The posts in this serie are the bits of coding experience, a small inventions and solutions which every programmer does everyday. Read the latest Tips&Tricks in Technology::Coding category.

Swing dialogs by default have no idea about “required” text fields, that is the fields which should be filled to perform a task. In this article I suggest a simple way how to automatically highlight the fields which have to be non-empty.

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