Code smells

https://ru.wikipedia.org/wiki/%D0%9A%D0%BE%D0%B4_%D1%81_%D0%B7%D0%B0%D0%BF%D0%B0%D1%88%D0%BA%D0%BE%D0%BC#%D0%A1%D1%82%D1%80%D0%B5%D0%BB%D1%8C%D0%B1%D0%B0_%D0%B4%D1%80%D0%BE%D0%B1%D1%8C%D1%8E