0-2" aria-hidden="true" tabindex="-1"></a><span class="kw">var</span> ptr: ?*<span class="dt">i32</span> = &amp;num;</span>
<span id="cb20-3"><a href="#cb20-3" aria-hidden="true" tabindex="-1"></a>ptr = <span class="cn">null</span>;</span>
<span id="cb20-4"><a href="#cb20-4" aria-hidden="true" tabindex="-1"></a>num = <span class="dv">6</span>;</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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<p>But what happens if we turn the table, and m