title: How to check if something is stored in CoreData
body: <p>Hi I want to be able to tore some information in core data and but i am unsure of how to check if the file was saved properly. I tried using NSLog but it returns null when its called. I have a dictionary which has a uniqueID and a title which I want to save. I pass this in along with the context of the database. I then sort the database to check if it has any duplicates or not, if not then I add the file. </p>
  
  <pre><code>+(VacationPhoto*) photoWithFlickrInfo: (NSDictionary*) flickrInfo inManagedObjectContext: (NSManagedObjectContext*) context{
  
  //returns the dictionary
  NSLog(@"Photo To Store =%@", flickrInfo);
  
  
  VacationPhoto * photo = nil;
  
  NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"VacationPhoto"];
  request.predicate = [NSPredicate predicateWithFormat:@"uniqueID = %@", [flickrInfo objectForKey:FLICKR_PHOTO_ID]];
  NSSortDescriptor * descriptor = [NSSortDescriptor sortDescriptorWithKey:@"title" ascending:YES];
  request.sortDescriptors = [NSArray arrayWithObject:descriptor];
  
  NSError *error = nil;
  NSArray *matches =  [context executeFetchRequest:request error:&amp;error];
  
  if (!matches || [matches count] &gt; 1) {
      // handle error
  } else if ( [matches count] == 0){
      photo.title = [flickrInfo objectForKey:FLICKR_PHOTO_TITLE];
  //Returns NULL when called 
      NSLog(@"title = %@", photo.title);
      photo.uniqueID = [flickrInfo objectForKey:FLICKR_PHOTO_ID];
  //Returns NULL when called 
      NSLog(@"ID = %@", photo.uniqueID);
  
  } else {
  //If photo already exists this is called
      photo = [matches lastObject];
  }
  
  return photo;
  
  }
  </code></pre>