Why NSIndexPath length always show 2? : <p>I have created a NSIndexPath object but when I print the value of its length property it will always show the value as 2. </p>

<pre><code> NSIndexPath *index = [NSIndexPath indexPathForItem:0 inSection:4];
</code></pre>

<blockquote>
  <p> {length = 2, path = 4 - 0}</p>
</blockquote>

<p>Why length is always 2?</p>
