title: Swift: Pass array by reference?
body: <p>I want to pass my Swift <code>Array</code> <code>account.chats</code> to <code>chatsViewController.chats</code> by reference (so that when I add a chat to <code>account.chats</code>, <code>chatsViewController.chats</code> still points to <code>account.chats</code>). I.e., I don't want Swift to separate the two arrays when the length of <code>account.chats</code> changes.</p>