Yay!!! I've finally received my Advanced Diploma in Counselling Psychology! The journey in studying for this course was arduous, demanding 3 hours on Tuesdays and Fridays for about 10 months, and additional time studying at home, for exams every 6 weeks.
Its been worth it!
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes