title: Swift 4 codable array with both object and int
body: <p>Let's say I have this JSON:</p>
  
  <pre><code>{
     "array": [
         33,
         {"id": 44, "name": "Jonas"}
     ]
  }
  </code></pre>
  
  <p>How do I write a swift 4 Codable struct to deserialize this JSON?</p>
  
  <pre><code>struct ArrayStruct : Codable {
      // What do I put here?
  }
  </code></pre>