title: Initialize in Ruby
body: <p>I used to have this</p>
  
  <pre><code>public constructor_name() {
     this(param)
  }
  
  public constructor_name(int param) {
    this.param = param
  }
  </code></pre>
  
  <p>in Java and what about ruby do we have this kind of self reference constructor ?</p>