title: std::queue initialization with NULL
body: <p>Is it possible to initialize a C++ <code>std::queue</code> with a <code>NULL</code> value like other variables?</p>
  
  <p>Like this:</p>
  
  <pre><code>HANDLE variable = NULL; 
  
  class Test
  {
  }
  </code></pre>
  
  <p>i.e.</p>
  
  <pre><code>std::queue&lt;Test*&gt; testQueue = NULL;
  </code></pre>
  
  <p>or</p>
  
  <pre><code>testQueue.empty();
  </code></pre>
  
  <p>or something like that?</p>