 class="keyword">typename</span> InputIterator<span class="special">&gt;</span> 
  <span class="identifier">InputIterator</span> 
  <span class="identifier">unique</span><span class="special">(</span><span class="identifier">InputIterator</span> first<span class="special">,</span> <span class="identifier">InputIterator</span> last<span class="special">,</span> 
         <span class="identifier">command_queue</span> <span class="special">&amp;</span> queue <span class="special">=</span> <span class="identifi