 JavaScript array methods and their observable
enumerable equivalents:</p>
<table>
  <thead>
    <tr><th>Standard Method</th><th>Observable Equivalent</th></tr>
  </thead>
  <tbody>
    <tr><td>pop</td><td>popObject</td></tr>
    <tr><td>push</td><td>pushObject</td></tr>
    <tr><td>reverse</td><td>reverseObjects</td></tr>
    <tr><td>shift</td><td>shiftObject</td></tr>
    <tr><td>unshift</td><td>unshiftObject</td></tr>
  </tbody>
</table>
<p>Additionally, to retrieve the first and last objects in an array