title: NSPredicate and simple Regular Expression problem
body: <p>I'm having problems with simple NSPredicates and regular expressions:</p>
  
  <pre><code>NSString *mystring = @"file://questions/123456789/desc-text-here";
  NSString *regex = @"file://questions+";
  
  NSPredicate *regextest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
  BOOL isMatch = [regextest evaluateWithObject:mystring];
  </code></pre>
  
  <p>In the above example <code>isMatch</code> is is always false/NO.</p>
  
  <p>What am I missing? I can't seem to find a regular expression that will match <code>file://questions</code>.</p>