Simple class’s variable accessor

Jul 19
2008
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class Class
  def attr(arg)
    arg = arg.to_s
    if self.class_variables.include?(arg)
      class_eval %(def self.#{arg.sub(/^\@\@/, '')}; #{arg}; end)
    else
      raise ArgumentError, "No such class attribute", caller
    end
  end
end
 
class Test
  @@class_var = "class variable value"
 
  attr :@@class_var
end
 
puts Test.class_var => "class variable value"
Written by Vidul in: OOP, Ruby |

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