title: Composit int Keys with value
body: <p>I need to store custom Objects as a value in a Dictionary like datastrukturer with two composite integer Keys. (composite IDs)</p>
  
  <p>I tried using arrays as keys but both don't work, because i guess that's just the pointer to that arrays, where used as the keys</p>
  
  <p>It would be perfect if i could use is like</p>
  
  <pre><code>store.put([12,43],myObject);
  store.get([12,43]);
  </code></pre>