  the effect is to <span class="bold"><strong>rebind</strong></span> to the new object
          instead of assigning the referee. This is unlike bare C++ references.
        </p>
<pre class="programlisting"><span class="keyword">int</span> <span class="identifier">a</span> <span class="special">=</span> <span class="number">1</span> <span class="special">;</span>
<span class="keyword">int</span> <span class="identifier">b</span> <span class="special">=</span> <span class="number">2</span> <span class="spec