--- %YAML:1.0 
test: Symbols 
brief: > 
    Ruby Symbols can be simply serialized using 
    the !ruby/symbol transfer method, or the 
    abbreviated !ruby/sym. 
yaml: | 
    simple symbol: !ruby/symbol Simple 
    shortcut syntax: !ruby/sym Simple 
    symbols in seqs: 
      - !ruby/symbol ValOne 
      - !ruby/symbol ValTwo 
      - !ruby/symbol ValThree 
    symbols in maps: 
      - !ruby/symbol MapKey: !ruby/symbol MapValue 
ruby: | 
    { 'simple symbol' => :Simple, 
      'shortcut syntax' => :Simple, 
      'symbols in seqs' => [ :ValOne, :ValTwo, :ValThree ], 
      'symbols in maps' => [ { :MapKey => :MapValue } ]
    } 
 
--- 
test: Ranges 
brief: > 
    Ranges are serialized with the !ruby/range 
    type family. 
yaml: | 
    normal range: !ruby/range 10..20 
    exclusive range: !ruby/range 11...20 
    negative range: !ruby/range -1..-5 
    ? !ruby/range 0..40 
    : range as a map key 
ruby: | 
    { 'normal range' => (10..20), 
      'exclusive range' => (11...20), 
      'negative range' => (-1..-5), 
      (0..40) => 'range as a map key' 
    } 
 
--- 
test: Regexps 
brief: > 
    Regexps may be serialized to YAML, both its 
    syntax and any modifiers. 
yaml: | 
    case-insensitive: !ruby/regexp "/George McFly/i" 
    complex: !ruby/regexp "/\\A\"((?:[^\"]|\\\")+)\"/" 
    simple: !ruby/regexp '/a.b/' 
ruby: | 
    { 'simple' => /a.b/, 'complex' => /\A"((?:[^"]|\")+)"/, 
      'case-insensitive' => /George McFly/i } 
 
--- 
test: Struct class 
brief: > 
    The Ruby Struct class is registered as a YAML 
    builtin type through Ruby, so it can safely  
    be serialized.  To use it, first make sure you 
    define your Struct with Struct::new.  Then, 
    you are able to serialize with Struct#to_yaml 
    and unserialize from a YAML stream. 
yaml: | 
    --- !ruby/struct:BookStruct 
      author: Yukihiro Matsumoto 
      title: Ruby in a Nutshell 
      year: 2002 
      isbn: 0-596-00214-9 
ruby-setup: | 
    book_struct = Struct::new( "BookStruct", :author, :title, :year, :isbn ) 
ruby: | 
    book_struct.new( "Yukihiro Matsumoto", "Ruby in a Nutshell", 2002, "0-596-00214-9" ) 
 
--- 
test: Nested Structs 
brief: > 
    As with other YAML builtins, you may nest the 
    Struct inside of other Structs or other data 
    types. 
yaml: | 
    - !ruby/struct:FoodStruct 
      name: Nachos 
      ingredients: 
        - Mission Chips 
        - !ruby/struct:FoodStruct 
          name: Tostitos Nacho Cheese 
          ingredients: 
            - Milk and Enzymes 
            - Jack Cheese 
            - Some Volatile Chemicals 
          taste: Angelic 
        - Sour Cream 
      taste: Zesty 
    - !ruby/struct:FoodStruct 
      name: Banana Cream Pie 
      ingredients: 
        - Bananas 
        - Creamy Stuff 
        - And Such 
      taste: Puffy 
ruby-setup: | 
    food_struct = Struct::new( "FoodStruct", :name, :ingredients, :taste ) 
ruby: | 
    [ 
      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' ) 
    ] 
 
--- 
test: Objects 
brief: > 
    YAML has generic support for serializing objects 
    from any class available in Ruby.  If using the 
    generic object serialization, no extra code is 
    needed. 
yaml: | 
    --- !ruby/object:Zoolander 
      name: Derek 
      look: Blue Steel 
ruby-setup: | 
    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 
ruby: | 
    Zoolander.new( "Blue Steel" ) 
 
--- 
test: Extending Kernel::Array 
brief: >  
    When extending the Array class, your instances 
    of such a class will dump as YAML sequences, 
    tagged with a class name. 
yaml: | 
    --- !ruby/array:MyArray 
    - jacket 
    - sweater 
    - windbreaker 
ruby-setup: | 
    class MyArray < ::Array; end 
ruby: | 
    outerwear = MyArray.new 
    outerwear << 'jacket' 
    outerwear << 'sweater' 
    outerwear << 'windbreaker' 
    outerwear 
 
--- 
test: Extending Kernel::Hash 
brief: > 
    When extending the Hash class, your instances 
    of such a class will dump as YAML maps, tagged 
    with a class name. 
yaml: | 
    --- !ruby/hash:MyHash 
    Black Francis: Frank Black 
    Kim Deal: Breeders 
    Joey Santiago: Martinis 
ruby-setup: | 
    # Note that the @me attribute isn't dumped 
    # because the default to_yaml is trained 
    # to dump as a regular Hash. 
    class MyHash < ::Hash 
      attr_accessor :me 
      def initialize 
        @me = "Why" 
      end 
    end 
ruby: | 
    pixies = MyHash.new 
    pixies['Black Francis'] = 'Frank Black' 
    pixies['Kim Deal'] = 'Breeders' 
    pixies['Joey Santiago'] = 'Martinis' 
    pixies