title: Why do Android Cursors start before the first row of results, and end after the last row?
body: <p>I'm trying to understand why they would start the cursor before the first position in a row and why it would end after the last position. Is there an inherit advantage to doing it this way?</p>
  <p>For example:</p>
  <blockquote>
  <pre><code>public abstract int getPosition () 
  </code></pre>
  <p>Since: API Level 1
  Returns the current position of the cursor in the row set. The value is zero-based. When the row set is first returned the cursor will be at position -1, which is before the first row. After the last row is returned another call to
  next()
  will leave the cursor past the last entry, at a position of
  count().</p>
  <p>returns
  the current cursor position.</p>
  </blockquote>
  <p>Thank you.</p>