02_foss4g-iteration.rb

require "yaml"
require "open-uri"
data = YAML.load(open('http://2009.foss4g.org/schedule.yml').read)

data.each do |k, v|
  puts k
  v.sort.each do |k, v|
    puts "  #{k}"
  end
end

# >> workshops
# >>   workshop_01
# >>   workshop_02
# >>   workshop_03
# >>   workshop_04
# >>   workshop_05
# >>   workshop_06
# >>   workshop_07
# >>   workshop_08
# >>   workshop_09
# >>   workshop_10
# >> tutorials
# >>   tutorial_01
# >>   tutorial_02
# >>   tutorial_03
# >>   tutorial_04
# >>   tutorial_05
# >>   tutorial_06
# >>   tutorial_07
# >>   tutorial_08
# >>   tutorial_09
# >>   tutorial_10
# >>   tutorial_11
# >>   tutorial_12