['apple', 'banana', 'carrot']  

[['foo', 'bar', 'baz']] 

['apple', ['foo', 'bar', 'x123'], 'banana', 'carrot'] 

[[['uno', 'dos']]] 

{ 'foo' => 'whatever', 'bar' => 'stuff' } 

{ 'foo' => 'whatever', 'bar' => [ 'uno', 'dos' ] } 

{ 'foo' => 'whatever',  
  'bar' => { 
     'fruit' => 'apple',  
     'name' => 'steve', 
     'sport' => 'baseball' 
   } 
} 

{ 'foo' => 'whatever',  
  'bar' => [ 
    { 
        'fruit' => 'apple',  
        'name' => 'steve', 
        'sport' => 'baseball' 
    }, 
    'more', 
    { 
        'python' => 'rocks', 
        'perl' => 'papers', 
        'ruby' => 'scissorses' 
    } 
  ] 
} 

[ { 'work on YAML.py' => ['work on Store'] } ] 

{ 'allow' => [ 'localhost', '%.sourceforge.net', '%.freepan.org' ] }

{ 'mapping' =>
  { 'name' => 'Joe',
    'job' => 'Accountant',
    'age' => 38
  }
}

{ 'seq' => [ 'a', 'b', 'c' ] } 

{ 'hash' => { 'name' => 'Steve', 'foo' => 'bar' } } 

{ 'languages' => [ 'Ruby', 'Perl', 'Python' ], 
  'websites' => { 
    'YAML' => 'yaml.org', 
    'Ruby' => 'ruby-lang.org', 
    'Python' => 'python.org', 
    'Perl' => 'use.perl.org'  
  } 
} 

{ 'attendances' => [ 45123, 70000, 17222 ] } 

'String' 

[ 
  "What's Yaml?", 
  "It's for writing data structures in plain text.", 
  "And?", 
  "And what? That's not good enough for you?", 
  "No, I mean, \"And what about Yaml?\"", 
  "Oh, oh yeah. Uh.. Yaml for Ruby." 
] 

{ 
  'the colon followed by space is an indicator' => 'but is a string:right here', 
  'same for the pound sign' => 'here we have it#in a string', 
  'the comma can, honestly, be used in most cases' => [ 'but not in', 'inline collections' ] 
} 

{ 
  'date string' => '2001-08-01', 
  'number string' => '192' 
} 

{ 
  'all my favorite symbols' => '#:!/%.)', 
  'a few i hate' => '&(*', 
  'why do i hate them?' => 'it\'s very hard to explain' 
} 

{ 
  'i know where i want my line breaks' => "one here\nand another here\n" 
} 

{ 'i want a long string' => "so i'm going to " + 
     "let it go on and on to other lines " + 
     "until i end it with a quote." 
} 

[
  "My little toe is broken in two places;", 
  "I'm crazy to have skied this way;", 
  "I'm not the craziest he's seen, since there was always " +
     "the German guy who skied for 3 hours on a broken shin " + 
     "bone (just below the kneecap);", 
  "Nevertheless, second place is respectable, and he doesn't " + 
     "recommend going for the record;", 
  "He's going to put my foot in plaster for a month;", 
  "This would impair my skiing ability somewhat for the duration, " +
     "as can be imagined."
]

{ 
  'name' => 'Mr. Show', 
  'hosted by' => 'Bob and David', 
  'date of next season' => nil 
} 

{ 
  'Is Gus a Liar?' => true, 
  'Do I rely on Gus for Sustenance?' => false 
} 

{ 
  'zero' => 0, 
  'simple' => 12, 
  'one-thousand' => 1000, 
  'negative one-thousand' => -1000 
} 

{ 
    1 => 'one', 
    2 => 'two', 
    3 => 'three' 
} 

{ 
  'a simple float' => 2.0, 
  'larger float' => 1000.09, 
  'scientific notation' => 1000.09 
} 

{ 
  'iso8601' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ), 
  'space seperated' => YAML::mktime( 2001, 12, 14, 21, 59, 43, 0.10, "-05:00" ) 
} 

Date.new( 1976, 7, 31 ) 

{ 'this' => "Foo\nBar\n" } 

{ 
    'normal' => "extra new lines not kept\n", 
    'preserving' => "extra new lines are kept\n\n\n", 
    'dummy' => 'value' 
} 

{  
  'clipped' => "This has one newline.\n", 
  'same as "clipped" above' => "This has one newline.\n", 
  'stripped' => 'This has no newline.', 
  'same as "stripped" above' => 'This has no newline.', 
  'kept' => "This has four newlines.\n\n\n\n", 
  'same as "kept" above' => "This has four newlines.\n\n\n\n" 
} 

{ 'this' => "Foo\n\n  \n",  
  'kept' => "Foo\n\n  \n" } 

[ 
    'apple',  
    'banana',  
    "can't you see the beauty of yaml? hmm\n", 
    'dog' 
] 

{  
    'quote' => "Mark McGwire's year was crippled by a knee injury.\n", 
    'source' => 'espn' 
} 

{  
  'clipped' => "This has one newline.\n", 
  'same as "clipped" above' => "This has one newline.\n", 
  'stripped' => 'This has no newline.', 
  'same as "stripped" above' => 'This has no newline.', 
  'kept' => "This has four newlines.\n\n\n\n", 
  'same as "kept" above' => "This has four newlines.\n\n\n\n" 
} 

showell = 'Steve' 

[ showell, 'Clark', 'Brian', 'Oren', showell ] 

hello = { 'Meat' => 'pork', 'Starch' => 'potato' } 

[  
  hello,  
  'banana', 
  hello 
] 

[ { 'foo' => 1, 'bar' => 2 } ]

[ { 'foo' => 1, 'bar' => 2 } ] 

y = Stream.new 
y.add( { 'foo' => 1, 'bar' => 2 } ) 

{ 'foo' => "---\n" } 

{ 
   'foo' => "---\nfoo: bar\n---\nyo: baz\n", 
   'bar' => "fooness\n" 
} 

{ 'simple symbol' => :Simple, 
  'shortcut syntax' => :Simple, 
  'symbols in seqs' => [ :ValOne, :ValTwo, :ValThree ], 
  'symbols in maps' => [ { :MapKey => :MapValue } ]
} 

{ 'normal range' => (10..20), 
  'exclusive range' => (11...20), 
  'negative range' => (-1..-5), 
  (0..40) => 'range as a map key' 
} 

{ 'simple' => /a.b/, 'complex' => /\A"((?:[^"]|\")+)"/, 
  'case-insensitive' => /George McFly/i } 

/R[Uu][Bb][Yy]$/i 

book_struct = Struct::new( "BookStruct", :author, :title, :year, :isbn ) 

book_struct.new( "Yukihiro Matsumoto", "Ruby in a Nutshell", 2002, "0-596-00214-9" ) 

food_struct = Struct::new( "FoodStruct", :name, :ingredients, :taste ) 

[ 
  food_struct.new( 'Nachos', [ 'Mission Chips', 
    food_struct.new( 'Tostitos Nacho Cheese', [ 'Milk and Enzymes', 'Jack Cheese', 'Some Volatile Chemicals' ], 'Angelic' ), 
    'Sour Cream' ], 'Zesty' ), 
  food_struct.new( 'Banana Cream Pie', [ 'Bananas', 'Creamy Stuff', 'And Such' ], 'Puffy' ) 
] 

class Zoolander 
  attr_accessor :name, :look 
  def initialize( look ) 
    @name = "Derek" 
    @look = look 
  end 
  def ==( z ) 
    self.name == z.name and self.look == z.look 
  end 
end 

Zoolander.new( "Blue Steel" ) 

class MyArray < Kernel::Array; end 

outerwear = MyArray.new 
outerwear << 'jacket' 
outerwear << 'sweater' 
outerwear << 'windbreaker' 
outerwear 

# Note that the @me attribute isn't dumped 
# because the default to_yaml is trained 
# to dump as a regular Hash. 
class MyHash < Kernel::Hash 
  attr_accessor :me 
  def initialize 
    @me = "Why" 
  end 
end 

pixies = MyHash.new 
pixies['Black Francis'] = 'Frank Black' 
pixies['Kim Deal'] = 'Breeders' 
pixies['Joey Santiago'] = 'Martinis' 
pixies