title: Delete a particular local notification
body: <p>I am developing an iPhone alarm app based on local notifications.</p>
  
  <p>On deleting an alarm, the related local notification should get cancelled. But how can I determine exactly which object from the array of local notifications is to be cancelled?</p>
  
  <p>I am aware of <code>[[UIApplication sharedApplication] cancelLocalNotification:notification]</code> method but how can I get this 'notification' to cancel it?</p>