hash example (music library)

library {
  :artist => {
    "The Magnetic Fields" => {
      "69 Love Songs" => ["Song 1", "Song 2"]
      ]
      "Get Lost" => ["Song 1", "Song 2"]
    }
    "Netural Milk Hotel" => {
      "In An Aeroplane Over the Sea" => ["Song 1", "Song 2"]
    }
  }
}

organized_library = Hash.new

songs.each do |song|
  song_array = song.split("-")

  artist = song_array[0].strip
  album = song_array[1].strip
  track = song_array[2].strip

  organized_library[artist.to_sym] ||={}
  organized_library[artist.to_sym] ||={album.to_sym} ||={}
  organized_library[artist.to_sym] ||={album.to_sym} << track


  # if organized_library[artist.to_sym] # weve seen this artist before
  #   if organized_library[artist.to_sym][album.to_sym] # weve seen this album before
  #     organized_library[artist.to_sym][album.to_sym] << track
  #   else 
  #     organized_library[artist.to_sym][album.to_sym] = [track]
  #   end
  # else
  #   organized_library[artist.to_sym] = {album.to_sym => [track]}
  # end

end

puts organized_library.inspect