pan class="special">()</span>
              <span class="special">&lt;=</span> <span class="identifier">size</span></code>
              and <code class="computeroutput"><span class="special">!</span> <span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">is_unbounded</span><span class="special">()</span> <span class="special">&amp;&amp;</span>
              <span class="special">(</span> <span class="identifier">traits_type</span><span class="special">::</span><s