https://stackup.ru/2026/07/18/%d1%87%d1%82%d0%be-%d1%81%d1%82%d0%be%d1%80%d0%be%d0%b6%d0%b8%d1%82-%d0%bf%d0%b0%d1%82%d0%b5%d1%80%d0%bd-raii-guard/