="number">0</span><span class="special">;</span>  <span class="special">}</span>

   <span class="identifier">movable</span> <span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="identifier">BOOST_RV_REF</span><span class="special">(</span><span class="identifier">movable</span><span class="special">)</span> <span class="identifier">m</span><span class="special">)</span>
   <span class="special">{</span>  <span class="identifier">value_</span> <s