hacking hash access w/ method_missing

method_missing_example.rb

class Person
  def initialize
    @hash = Hash.new
  end
  
  def method_missing(name, value=nil, *args)
    # Assign only valid keys:
    if [:name, :dob, :height, :weight].include? name
      @hash[name]
    elsif value and [:name=, :dob=, :height=, :weight=].include?(name)
      @hash[name.to_s.chomp('=').to_sym] = value
    else
      super
    end
  end
end