 class="special">::</span><span class="identifier">range_iterator</span><span class="special">&lt;</span> <span class="identifier">Range</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">range_iterator</span><span class="special">&lt;</span> <span class="identifier">Range</span> <span class="