name const_iterator_type&lt;Iterator&gt;::type&gt;  type;
<a name="l00180"></a>00180 };
<a name="l00181"></a>00181 
<a name="l00182"></a>00182 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;
<a name="l00183"></a>00183 <span class="keyword">struct </span>iterator_is_mutable&lt;memory_based_step_iterator&lt;Iterator&gt; &gt; : <span class="keyword">public</span> iterator_is_mutable&lt;Iterator&gt; {};
<a name="l00184"></a>00184 
<a name="l00185"></a>00185 
<a name=