M635J520

Sequel on the Pi - and how to access Access DBs from Ruby (in parenthesis)

Posted on February 2, 2013

Recently I had to liberate some data from an old MS Access DB, so I discovered a gem of a Ruby gem called "sequel" that generalizes database access (for many different databases) - ORM style. Most excellent, so I figured I wanted to... [Read More]
Tags:
- Programming
- Linux
- Pi
- Windows
- gem
- Ruby
- Databases
MIDI channels in Cubase - or there, and back again

Posted on January 13, 2013

The other day a friend and I experimented with connecting his excellent monotribe (with the miditribe extension) to my Cubase to see if we could record the MIDI-signals coming from it. For Science! This made me realize that, being a MIDI-noob, I... [Read More]
Tags:
- music making
- music
- fix
- MIDI
- cubase
Counting in Ruby Revisited - Benchmarked

Posted on January 3, 2013

After writing the post a while back on counting in Ruby I wondered if the two different implementations I outlined had similar runtimes. Inspired by this post by makaroni4 I went ahead and wrote the following little "benchmarker":Loading...So, you see the block centered... [Read More]
Tags:
Partitioning - or, students into n groups - in Ruby

Posted on December 24, 2012

A while back a friend of mine asked if I could automate the creation of groups in a class of students - to maximize the variation within each group, but minimize the difference between them. This sounded like an interesting problem, so... [Read More]
Tags:
- Programming
- hack
- source code
- algorithm
- stats
- Ruby
Unicode characters in irb on OS X

Posted on December 8, 2012

I noticed that my RVM-handled irb in OS X (Mountain Lion) didn't like Norwegian characters today. So instead of an 'ø', I got '\U+FFC3\U+FFB8' during entry, and nothing afterwards. Like so: Not really satisfactory. After googling: "os x irb unicode characters rvm"... [Read More]
Tags:
- Programming
- Mountain Lion
- Mac
- fix
- OS X
- Ruby
Un, deux, tscha-tscha - or Counting in Ruby

Posted on December 6, 2012

Inspired by my little son's eagerness to count when he sees groups of things that (he thinks) can be grouped together these days, I wanted to post my often used, tiny, fairly naïve extension to Ruby's Array class that I call count_by.This... [Read More]
Tags:
Kjært barn har mange navn - or, the story of how I discovered Ruby's each_cons

Posted on November 22, 2012

Reading the Pragmatic Programmer's PragPub from March (I must admit I don't have/take the time to read them regularly enough) I stumbled upon Scala's sliding function on Arrays. This creates a sliding window of consecutive sub arrays of an array. So an Array(1,2,3,4).sliding(2)... [Read More]
Tags:
- Programming
- Euler
- functional
- Scala
- source code
- Ruby

Sequel on the Pi - and how to access Access DBs from Ruby (in parenthesis)

MIDI channels in Cubase - or there, and back again

Counting in Ruby Revisited - Benchmarked

Partitioning - or, students into n groups - in Ruby

Unicode characters in irb on OS X

Un, deux, tscha-tscha - or Counting in Ruby

Kjært barn har mange navn - or, the story of how I discovered Ruby's each_cons