title: Can boolean operators be used with the preprocessor?
body: <p>I wondering if it possible to have a preprocessor OR or AND statement?  I have this code where I want to run under <code>_DEBUG</code> or <code>_UNIT_TEST</code> tags(?).</p>
  
  <p>What I want is something like the following:</p>
  
  <pre><code>#if _DEBUG || _UNIT_TEST
    //Code here
  #endif
  </code></pre>
  
  <p>If this is not possible, is there a workaround to achieve the same thing without having to duplicate the code using a <code>#elseif</code>?</p>