title: how to delete a character?
body: <p>Hi I am developing a code in which I need to perform a delete a last character from a uitextview
  I tried like this </p>
  
  <pre><code>-(IBAction)delete:(id)sender{
      uitextview.text =[NSString stringWithFormat:@"%@%@",uitextview.text,@"\b"];
  }
  </code></pre>
  
  <p>on a delete button action i gave this code but this is not performing the deletion.
  please help to doing this work and thanks in advanceO</p>