title: assignment to an array of std::unique_ptr
body: <pre><code>struct MyStruct
  {
      int x = 0;
  }
  
  std::array&lt;std::unique_ptr&lt;MyStruct&gt;, 10&gt; Arr;
  
  // Arr[0] = ?
  </code></pre>
  
  <p>What is the syntax to assign an object to such an array? <a href="https://en.cppreference.com/w/cpp/memory/unique_ptr" rel="nofollow noreferrer">My reference</a>.</p>