Getting Started with Raspberry Pi

I ordered a Raspberry Pi to understand what it does, try a hobby project, and learn about GPIO pins. I thought the easiest way to set it up at home would be to order the pre-installed NOOBS SD card, so...

RubyConf Argentina 2012

RubyConf Argentina 2012 was held in Buenos Aires, Argentina, at a theater in the Paseo La Plaza area. This area is in the center of Buenos Aires near the obelisk landmark. Attendees came from Buenos Aires, Brazil, Chile, Uruguay, Peru,...

Using a Set in Ruby

A Set 1 is a useful collection in Ruby. A Set does not allow duplicates. Converting between a Set and an Array is easy. In the article A Guide to Ruby Collections, II: Hashes, Sets, and Ranges 2 the author...

Getting Started with Tmux

I started learning tmux and highly recommend the book tmux: Productive Mouse-Free Development 1 as a guide. My tmux.conf 2 configuration file is available as well. tmux: Productive Mouse-Free Development by Brian P. Hogan The Pragmatic Programmers¬†↩ tmux.conf configuration file¬†↩...

Edit the Filename of the Current Buffer in Vim

This blog is generated from text files that are comprised of a section of YAML code then markdown-formatted text. To convert the text files for use with new blog software I had to edit each filename and put the date...

Cropping an Image Programmatically

ImageMagick is an image manipulation library that supports the ability to crop an image programmatically. There is a creative aspect to making a crop from an original image. A photo producer may be unhappy with a crop that was chosen...