title: How to restrict user entering - sign after entering numeric data in uitextfield?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/7531834/textfieldshouldchangecharactersinrangereplacementstring">textField:shouldChangeCharactersInRange:replacementString:</a>  </p>
  </blockquote>
  
  
  
  <p>I am facing a situation where user is allowed to enter - sign after entering numeric value. How to restrict/avoid this? </p>