 class="special">=</span> <span class="identifier">rb</span> <span class="special">;</span> <span class="comment">// Changes the value of 'a' to 'b'</span>
<span class="identifier">assert</span><span class="special">(</span><span class="identifier">a</span><span class="special">==</span><span class="identifier">b</span><span class="special">);</span>
<span class="identifier">b</span> <span class="special">=</span> <span class="number">3</span> <span class="special">;</span>
<span class="identifier">assert</