kind=added
names=to_yaml_properties
visibility=public

--- to_yaml_properties -> [String]
[[m:Object#instance_variables]].sortの結果を返します。

@return オブジェクトのインスタンス変数名の配列

  require 'yaml'
  
  h = {
    :ugo => 17,
    :hoge => "fuga",
  }
  
  p h.to_yaml_properties
  #=> []
  class MyDog
    attr_accessor :name, :age
  end
  
  c = MyDog.new
  c.name = "Pochi"
  c.age = 3
  p c.to_yaml_properties.join(",")
  #=> ["@age,@name"]

