<p><span class="h-card" translate="no"><a href="https://mastodon.social/@mcc" class="u-url mention">@<span>mcc</span></a></span> you can't get a &mut pointer to the inside of an Rc, which is why if you want one, you have to add a second thing that gives it out</p><p>this second thing has to avoid giving it out twice while itself being a &Thing which is Copy</p>
