title: Kotlin immutable arrays
body: <p>Kotlin lists come in separate mutable and immutable varieties, where the former is derived from the latter. But as I understand it, with arrays, there is no separate immutable type per se; instead, an immutable array is declared like <code>Array&lt;out Foo&gt;</code>.</p>
  
  <p>Is this correct?</p>
  
  <p>If so, what's the reason for array and list types being designed differently in that regard?</p>