title: How is the 'i' variable being incremented in this loop?
body: <p>Below code prints 0,1,2,3,4,5,6,7,8,9</p>
  
  <pre><code>for (i &lt;- 0 until 10) {
      println(i) 
  </code></pre>
  
  <p>How is the var 'i' being incremented ? I suspect there is something implicit occurring but inspecting the signature of 'until' which returns a Range I dont know what this is ?</p>