title: Is it useless to declare a local variable as rvalue-reference, e.g. T&& r = move(v)?
body: <p>Could you guys give me an illustrative example under certain circumstance to prove the following statements are useful and necessary?</p>
  
  <pre><code>AnyTypeMovable   v;
  AnyTypeMovable&amp;&amp; r = move(v);
  </code></pre>