title: Which data structure to use to pass pairs of values?
body: <p>I need to store and pass around several paired objects:</p>
  
  <p>1) An <code>NSString</code> of a filename such as "sprite.png"</p>
  
  <p>2) <code>BOOL</code> value for whether or not that sprite should be animated.</p>
  
  <p>So basically, I have a bunch of sprites, and each of them are either animated or not.</p>
  
  <p>I thought I could use an <code>NSDictionary</code> to store everything, but I think using <code>[NSNumber numberWithBool:YES]</code> as the key only allows you to have a single entry with that value.</p>
  
  <p>What sort of structure is most appropriate to pass along that can satisfy my requirements?</p>