title: Round off float values in a dictionary
body: <p>I have an array containing dictionaries. I need to change the value for key "price" to float value with 2 decimal places alone, but the dictionary should remain the same. I tried fetching each price values and replacing them into a mutable array. But I need it in a simpler solution. Thanks in advance.</p>
  
  <pre><code>(
  {
      pen =     {
          price = 180.1299;
      };
      pencil =     {
          price = 20.1299;
      };
  },
  {
      pen =     {
          price = 111.1267;
      };
      pencil =     {
          price = 23.1278;
      };
  }
  )
  </code></pre>