tifier">attr</span><span class="special">&lt;</span> <span class="identifier">point</span> <span class="special">&gt;(</span><span class="identifier">name</span><span class="special">)</span> <span class="special">!=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">lexical_cast</span><span class="special">&lt;</span> <span class="identifier">point</span> <span class="special">&gt;(</span><span class="identifier">arg</span><span class="special">);</span>
   