1. Encounter undefined identifier error in C++.
2. Go through the checklist of all possible causes three times.
3. Become convinced compiler is possessed.
4. Go wash dishes.
5. Come back and see that two headers have the same guard.
Code blindness is real, y'all.
[Notice Regarding the Transfer of the mstdn.jp / mastodon.cloud Services] We have received several inquiries showing interest in a transfer following the announcement of the end of the mstdn.jp and mastodon.cloud services. As a result of subsequently evaluating the situation and making preparations, we have decided that the corresponding services will be transferred to Sujitech, LLC. on June 30. Thank you.