title: having multiple constructors in ruby
body: <p>is there a way to have multiple “initialize” methods in ruby? 
  For example:  one method excepting one  argument while another excepts three ?</p>
  
  <p>Something like </p>
  
  <pre><code> class One
    def initialize (a)
      puts a
    end
    def initialize_1 (a,b)
      puts a ,b 
    end
  end
  </code></pre>