title: Filter Array using NSPredicate with Array of Ids
body: <p>I am attempting to filter an Array of dictionary objects using <code>NSPredicate</code>. I have an array of Ids that I want to filter this array against however I'm not sure on how to do so. This is the closest I have got to a working version. However <code>NSPredicate</code> is thinking that Self.id is a number when it is a <code>NSString</code> Guide</p>
  
  <pre><code>NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"SELF.id CONTAINS %@", UserIds];
  </code></pre>
  
  <p>However this errors out with the following:</p>
  
  <pre><code>*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't look for value ((
  "36eaec5a-00e7-4b10-b78e-46f7396a911b",
  "26fc5ea2-a14b-4535-94e9-6fb3d113838c",
  "0758a7d0-0470-4ff6-a96a-a685526bccbb",
  "10dae681-a444-469c-840d-0f16a7fb0871",
  "0280234c-36ae-4d5f-994f-d6ed9eff6b62",
  "89F1D9D4-09E2-41D3-A961-88C49313CFB4"
  )) in string (1f485409-9fca-4f2e-8ed2-f54914e6702a); value is not a string '
  </code></pre>
  
  <p>Any help you can provide would be great.</p>