title: Searching NSArray of NSDictionary objects
body: <p>I've contacts array where each contact is a dictionary.</p>
  
  <p>Each contact has a key "contact_type" which is an NSNumber. Contact type basically represents whether its a Facebook, LinkedIn or Mail contact etc.
  I've a search array which holds only NSNumber of contact_type's. </p>
  
  <p>What I want is to make a temporary array of contacts which I want to search using my search array.</p>
  
  <p>I am facing trouble using NSPredicate to create searched contacts array. Can some one guide me on how to do it?</p>