title: Is there any difference between "T" and "const T" in template parameter?
body: <p>Is there any difference between following 2 syntax:</p>
  
  <pre><code>template&lt;int N&gt; struct A;         // (1)
  </code></pre>
  
  <p>and</p>
  
  <pre><code>template&lt;const int N&gt; struct A;   // (2)
  </code></pre>
  
  <p>Any general guideline for when to use each syntax ?</p>