I test the code on the following Rubies

• Ruby 1.8.7 p249
• Ruby 1.9.2 p290
• JRuby 1.6.4

i defined 2 classes

• Video
• VideoData

'Video' is a basic class container

The main class is 'VideoData' which loads and process the cvs file, the main method is "load_csv" which calls the CSV class and then walk through the array for each line of the array of arrays as well the first line contains the 'tags' that should replace the 'x' once it finds a match in a column replaces it with the value of line 1, after that split the array from column 3 to the end of the array eliminates 'null's' then creates a new Video class and add it to a HashMap whose key is the name of video

The exceptions are catched but not actions as ben taken understanding that the loader is a 'batch' processor can't break all the operation because a single exception.

• all
• by_name

'all' returns all the values of the HashMap as array

'by_name(video_name)' return the specific video object

require './video_parser'
video_data = VideoData.new
video_data.load_csv('video_data.csv')

#all the data
for video in video_data.all
	puts "#{video.name} #{video.date} #{video.celebrity} #{video.number}"
end

#single entry
puts video_data.by_name("tSP3Yqqk1Vg").inspect