span class="identifier">std</span><span class="special">::</span><span class="identifier">islower</span></code>
                      in the character set defined by <code class="computeroutput"><span class="identifier">NS</span></code>
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <a class="link" href="../../reference/char/char_class.html" title="Character Classification Generators (alnum, digit, etc.)"><code class="computeroutput"><span clas