title: How to check if string matches a regular expression in objective-c?
body: <p>since regular exressions are not supported in Cocoa I find <a href="http://regexkit.sourceforge.net/RegexKitLite/index.html#RegexKitLiteOverview" rel="noreferrer"><strong>RegexKitLite</strong></a> very usefull.
  But all examples extract matching strings. </p>
  
  <p>I just want to test if a string matches a regular expression and get a Yes or No.</p>
  
  <p>How can I do that?</p>