title: Return in function without return value in Swift
body: <p>Let's take a look at this function:</p>
  
  <pre><code>func nothing(){
      return
  }
  </code></pre>
  
  <p>it does not return a value, but we can write <code>return</code> statement how Swift handle that ? what happens behind the scene does <code>return</code> without value returns 0 or any value to handle this case ? </p>