ion</th>
</tr>
<tr><td align="left" valign="top"><p>
          Compared to the <span class="emphasis"><em>inplace</em></span> <code class="computeroutput"><span class="keyword">operator</span>
          <span class="identifier">o</span><span class="special">=</span></code>
          every use of an <span class="emphasis"><em>infix</em></span> <code class="computeroutput"><span class="keyword">operator</span>
          <span class="identifier">o</span></code> requires <span class="emphasis"><em><span class="