title: "any" in Typescript
body: <p>I am beginner in typescript. I have a doubt in usage of "any" type.</p>
  
  <p>Using "any" is basically opting out type checking if I am right. For example</p>
  
  <ol>
  <li><p><code>var num:any = 12</code></p></li>
  <li><p><code>var num = 12</code></p></li>
  </ol>
  
  <p>we could probably use the second one itself, what's the need for 'any'?</p>