utility_identitytype_templates" title="Templates"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.templates"></a><a class="link" href="#boost_utility_identitytype.templates" title="Templates">Templates</a></h2></div></div></div><p>
      This macro must be prefixed by <code class="computeroutput"><span class="keyword">typename</span></code>
      when used within templates. For example, let's program a macro that declares
      a function parameter 