http://www.kotek.net/ 2012-01-18T16:02:00+01:00 http://www.kotek.net/ http://www.kotek.net/lib/images/favicon.ico text/html 2012-01-18T01:00:32+01:00 Jan Kotek http://www.kotek.net/blog/jdbm_3.0_alpha_1_released?rev=1326844832&do=diff I am proud to announce first alpha of JDBM3. JDBM is embedded Java key value database with more than 10 years of history. It provides java collections (maps, sets and lists) backed up by disk storage. And it has unbeatable performance and simplicity. text/html 2012-01-11T23:00:53+01:00 Jan Kotek http://www.kotek.net/start?rev=1326319253&do=diff JDBM project is located at Github: <https://github.com/jankotek/JDBM3> I am an amateur astronomer, opensource hacker and Scala programmer. I live in Galway, Ireland. Links: Blog Asterope Linkedin Twitter Github text/html 2011-11-02T09:54:23+01:00 Jan Kotek http://www.kotek.net/blog/pixy2_updated?rev=1320224063&do=diff Pixy 2 System is an astronomical image examination and object identification application. It process raw images and makes basic corrections. It can also identify asteroids, comets and find variable stars. It was developed by Seiichi Yoshida, I took liberty and updated it a bit. text/html 2011-11-01T23:48:37+01:00 Jan Kotek http://www.kotek.net/blog/pixy2?rev=1320187717&do=diff I am not sure if you know Pixy2. It is very good program for making photometry on CCD image. It can also identify starts on CCD image. But Pixy2 depends on external XML parser and does not start with JRE 1.6 (internal XML parser). I modified source code to compile under Java 1.6 and recompile it. Now it is possible to run this software on JRE 1.6. Release jar is here. text/html 2011-10-24T16:38:54+01:00 Jan Kotek http://www.kotek.net/blog/jdbm_3_is_coming?rev=1319467134&do=diff A few weeks ago I started work on JDBM 3 at github. Main goal is to improve simplicity and performance. JDBM3 is packed with new features and changes. Difference from JDBM2 is even bigger than between JDBM1 and JDBM2. But there is still policy 'no test left behind', so we should enjoy great stability similar to previous releases. text/html 2011-07-07T10:53:09+01:00 Jan Kotek http://www.kotek.net/blog/scala_problems?rev=1310028789&do=diff I love Scala, it lifted my capabilities and made me incredible productive. But after 18 months I found a few problems. Compilation speed Scala compilation is just bloody slow. My 'small' project with 200+ classes takes about 2 minutes to compile on quad core system. It is about 10x slower than similar code in Java. Scala compiler does lot of additional stuff (type inference, implicit conversions), so it kind of makes sense. text/html 2011-04-22T11:20:51+01:00 Jan Kotek http://www.kotek.net/blog/scala_fast_compiler_and_intellij_idea?rev=1303464051&do=diff Scala compilation in Idea is painfully slow on large projects. SFC should speed up, but is just not reliable. Solution? Just start Scala Fast Compiler from Ant script and use it from Idea. If previous SFC instance crashed, it may left mess behind. So before starting SFC it is good to delete its settings. This idea comes from Krzysztof Białek. He provides shell to stat SFC, but why not to use Ant: text/html 2011-04-12T22:31:28+01:00 Jan Kotek http://www.kotek.net/blog/galway_sky_atlas_1st_edition?rev=1302640288&do=diff I am pleased to announce first edition of Galway Sky Atlas. It is an opensource community free a beer atlas. It coverts 200000 stars down to 10.5 magnitudes. It also contains 10000 objects from SAC deep sky database. Atlas comes on 473 charts with same layout as first edition of Uranometria.