title: std::array vs array performance
body: <p>If I want to build a very simple array like:</p>
  <pre><code>int myArray[3] = {1,2,3};
  </code></pre>
  <p>Should I use <code>std::array</code> instead?</p>
  <pre><code>std::array&lt;int, 3&gt; a = {{1, 2, 3}};
  </code></pre>
  <p>What are the advantages of using <code>std::array</code> over usual ones? Is it more performant? Just easier to handle for copy/access?</p>