Hash#to_class

gistfile1.rb

class Hash
  def to_class(name, namespace='Object')
    hash = self
    namespace = Kernel.const_get namespace.capitalize
    name = name.capitalize
    namespace.const_get(name).new hash
  rescue Exception => err
    namespace.const_set(name, Class.new do
      attr_accessor *hash.keys
      def valid?() true end
      def initialize(hash)
        hash.each do |key, val|
          instance_variable_set "@#{key}", val
        end
      end
    end).new hash
  end
end

person_hash = { 'first_name' => 'Gino', 'last_name' => 'Lucero', 'age' => 34, 'sex' => 'M' }
person = person_hash.to_class('person')

person.inspect
#<Person:0x1099d3640 @first_name="Gino", @last_name="Lucero", @age=34, @sex="M">

person.valid?
true