title: How to Substring a NSString in iOS?
body: <p>How can I remove all dollar($) symbols from my NSString? </p>
  
  <pre><code>amountDataArray = 
      [[NSMutableArray alloc]
           initWithObjects:@"$ 10", @"$ 20", @"$ 30", @"$ 40", @"$ 50", @"$ 60", nil];
  </code></pre>
  
  <p>I am showing displaying string  in <code>UILabel</code>:</p>
  
  <pre><code>confirm.balanceStr = self.amountLbl.text;
  </code></pre>
  
  <p>I am also setting <code>amountLbl.text</code> to <code>confirm.balanceStr</code>, but I don't want '$' in my string.</p>
  
  <p>I want to show only amount like 20, 30 , 40 but not with the dollar, like $10, $20,</p>