How to validate a set of options fast and classy

options_validate

module YourModule
    
  VALID_OPTIONS = [ :foo, :bar ]
      
  def your_method(parameter, options={ })
    
    invalid_options = options.keys - VALID_OPTIONS
        
    raise ArgumentError, "invalid option(s): #{invalid_options.join(', ')}" if invalid_options.any?
  end
end