This blog started with posts only about computer programming. But over the years I started posting drawings and illustrations, maps and GIS images, writing about arts and, more recently, about data visualization. I also keep some technical notes and gists on GitHub.
PermGen errors and java.lang.ClassCastException: com.sun.crypto.provider.AESCipher cannot be cast to javax.crypto.CipherSpi running Jenkins plug-in tests with PowerMock
Running word-count example on a Hadoop commodity-hardware cluster and on a Hadoop local installation
Faça seus Testes Falarem TAP (Make your Tests Speak TAP) article published in MundoJ, issue 47, March/April 2011
TestLink and Hudson (now Jenkins) short tutorial in Automated Software Testing Magazine, issue March 2011