Create Some Hashes. Did a 4-level movie hash. Tried to create complicated hash with code. Didn't fully work.

gistfile1.rb

movies = [
  'Thriller - Denis Villeneuve - Hugh Jackman - Prisoners',
  'Thriller - James Wan - Patrick Wilson - Insidious',
  'Thriller - James Wan - Patrick Wilson - The Conjuring',
  'Thriller - Neill Blomkamp - Matt Damon - Elysium',
  'Action - Ron Howard - Chris Hemsworth - Rush',
  'Action - Joss Whedon - Robert Downey Jr - The Avengers',
  'Action - Joss Whedon - Scarlett Johansson - The Avengers: Age of Ultron',
  'Comedy - Ron Howard - Tom Hanks - Splash'
]

library = {}

=begin
{ 
  'Thriller' => {
      'James Wan' => {'Patrick Wilson' => ['Insidious', 'The Conjuring']}, 
      'Denis Villeneuve' => {'Hugh Jackman' => ['Prisoners']}
  }
  'Action' => {
      'Ron Howard' => {'Chris Hemsworth' => ['Rush']},
      'Joss Whedon' => {
            'Robert Downey Jr' => ['The Avengers'], 
            'Scarlett Johansson' => ['The Avengers: Age of Ultron']}
  }
}
=end

# This does not fully work. Need to fix it:

movies.each do |movie|
  #binding.pry
  genre, director, actor, film = movie.split(' - ')
  if library[genre] && library[genre][director] & library[genre][director][actor]
    library[genre][director][actor] << film
  elsif library[genre] && library[genre][director]
    library[genre][director][actor] = [film]
  elsif library[genre]
    library[genre][director] = {actor => [film]}
  else 
    library[genre] = {director => {actor => [film]}}
  end
  p library
end

puts library