JProfiler is a Java profiler which can give you insight into what a running application is doing: which methods are consuming the most cpu, how many objects are created, etc. Jprofiler also shows you information about jdbc calls and sql statements executed by your java application.
Setting up Jprofiler to profile a Mendix runtime is easy, you can start profiling a running Mendix runtime, without reconfiguration or restarting the application.
After reading this fine summary of the history of Python 3 by Nick Coghlan I was inspired to update as many of my half finished projects and miscellaneous scripts as possible. Then I looked up and I had lost several hours of my life. To save random internet strangers from the same pain as I experienced here is a catalogue of problems and how I solved them.
I’ve been trying to install open source software. In this case an application called Moodle. I followed the instructions to install it on an Ubuntu Server vm but they were missing a couple of key points.
After installing the Moodle package (under “Moodle Installation” in the instructions) you need to (more...)
Tijdens het LAC-2013 heb ik een presentatie verzorgd over Dynamische Architectuur Visualisatie. Tijdens deze presentatie heb ik laten zien hoe ik schetsen in SVG formaat gebruik als visuele ondersteuning van een presentatie. De svg versie van deze presentatie zie je hieronder. De volgende pagina biedt de mogelijkheid om slides van (more...)
Selenium is a useful tool for automating functional tests. In this post i’ll show you some tips and tricks about using Selenium IDE with Mendix. Selenium IDE is a Firefox plugin that enables you to record whatever you are doing in Firefox, so that you can repeat these steps as (more...)
I had the great privilege to present this weekend at PyCon Australia 2013. My talk was originally titled "Why I Use py.test and Maybe You Should Too" but as I wrote the paper and accompanying slides I realised that it should really have been called "How to Start Unit (more...)
(blogarhythm ~ Can't Happen Here - Rainbow)
It is a pretty common pattern to branch depending on whether a query returns any data - for example to render a quite different view. In Rails we might do something like this:
query = User.where(deleted_at: nil).and_maybe_some_other_scopes
if results = (more...)
So the best swag you can get from a technology conference is code, right? Well RedDotRubyConf 2013 did not disappoint! Thanks to some fantastic speakers, my weekends for months to come are spoken for. Here's just some of the goodness:
(blogarhythm ~ Ruby (Kaiser Chiefs))
The third RedDotRubyConf is over, and I think it just keeps getting better! Met lots of great people, and saw so many of my Ruby heroes speak on stage. Only thing that could make it even better next year would be to get the (more...)
Good news, I am back in blogging :) In recent years I have spent my time primarily on eazyBI business intelligence application development where I use JRuby, Ruby on Rails, mondrian-olap and many other technologies and libraries and have gathered new experience that I wanted to share with others.
Recently I did eazyBI migration from JRuby 1.6.8 to latest JRuby 1.7.3 version as well as finally migrated from Ruby 1.8 mode to Ruby 1.9 mode. Initial migration was not so difficult and was done in one day (thanks to unit tests which (more...)
Megar (“megaargh!” in pirate-speak) is a Ruby wrapper and command-line client for the Mega API.
In the current release (gem version 0.0.3), it has coverage of the basic file/folder operations: connect, get file/folder listings and details, upload and download files. You can use it directly in Ruby with what I hope you'll find is a very sane API, but it also sports a basic command-line mode for simple listing, upload and download tasks.
If you are interested in hacking around with Mega, and prefer to do it (more...)