title: How do I convert a string version of a number in an arbitrary base to an integer?
body: <p>how to convert string to integer??</p>
  
  <p>for ex:</p>
  
  <ul>
  <li>"5328764",to int base 10</li>
  <li>"AB3F3A", to int base 16</li>
  </ul>
  
  <p>any code will be helpfull</p>