['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