title: Swift, allKeys, array, dictionary, order
body: <p>I want to convert below code into swift, Actually i want do not want to loose order of keys using allKeys of nsdictionary</p>
  
  <pre><code> NSArray *keys = [myDictionary allKeys];
  keys = [keys sortedArrayUsingComparator:^(id a, id b) {
      return [a compare:b options:NSNumericSearch];
  }];
  </code></pre>