title: Are dictionaries the presumed collection (array) in Xcode?
body: <p>To use uisearchdisplaycontroller to specify a search on specific array fields, I found that the syntax caters only to key-value (dictionary?) data. Now, when I need to sort an array, I see again that the methods cater to key references, not mere array indexing. (I've built complex data with keyless arrays, not dictionaries.) Do I understand correctly that I should default to using dictionaries everywhere? Is there any situation to use plain arrays?</p>
  
  <p>I see now the Key-Value Coding Guide (document 1812 of 3894)... should get to it any minute now.</p>