Hi Bruno!

Implementation is established between interfaces/abstract classes and concrete classes which implement the specific behavior (please check the Encapsulation part in the "Pillars of OOP" chapter for details).

Please let me know if you have any further questions.

Здравствуйте, Владислав! К сожалению, пока что курс всё ещё работе. Мои изначальные анонсы делались ещё в пре-ковидные месяцы, с того времени очень много что поменялось и сроки изрядно сдвинулись.

Hi Jose!

Sorry for the inconvenience. The dark theme is on my todo list. For now, you can use one of the browser extensions that work around this issue.

Chrome: https://chrome.google.com/webstore/detail/dark-reader/eimadpbcbfnmbkopoojfekhnkhdbieeh/related?hl=en

Firefox: https://addons.mozilla.org/en-US/firefox/addon/darkreader/

Спасибо на добром слове!

Hi! I believe, the Date is the type of field. Since both start and end are dates, they should be of the same type.

Merci pour les mots gentils !

Hi!

No, sorry, not at this time.

Hi!

The design patterns book is translated into Spanish, you can buy it along with the other language versions. The refactoring course is not yet translated.

Hi!

Sorry for the inconvenience, the issue is fixed.

Thanks! I'll fix this with the next update.