="#1">1</a>].
<p>
<h3>Example</h3>
<p>
<pre>
typedef <a href="../Reference/list.html">list</a>&lt;long&gt;::type types1;
typedef list&lt;long,int&gt;::type types2;
typedef list&lt;long,int,char&gt;::type types3;
<p>
typedef pop_back&lt;types1&gt;::type result1;
typedef pop_back&lt;types2&gt;::type result2;
typedef pop_back&lt;types3&gt;::type result3;
<p>
BOOST_STATIC_ASSERT(<a href="../Reference/size.html">size</a>&lt;result1&gt;::type::value == 0);
BOOST_STATIC_ASSERT(size&lt;result2&gt;::type::value == 1