title: How to test 2 NSString to see if they're the same?
body: <p>So I want to test 2 <code>1NSString</code> to see if they're the same while I'm typing so like:</p>
  
  <pre><code>NSString *theOriginalString = [NSString stringWithFormat:@"Superman"];
  
  NSString *theTypedString = [textView string];
  </code></pre>
  
  <p>I want to see if the <code>TypedString</code> is wrong while I type it out so a warning pops out if someone typed the wrong answer.  </p>
  
  <p>Thank you in advance.  </p>