Release:%BDS%\bin\dccosx64.exe -$C- -$D0 -$L- -CG -H -M -Q -V- -W^ -Z --no-config -JPHN -W-UNSUPPORTED_CONSTRUCT -W-UNIT_DEPRECATED -W-SYMBOL_DEPRECATED -W-UNIT_PLATFORM-W-SYMBOL_PLATFORM -W-WIDECHAR_REDUCED -R%BDS%\lib\osx64\release -U%BDS%\lib\osx64\release -O%BDS%\lib\osx64\release -NU%BDS%\lib\osx64\release-NH%BDS%\include\osx\rtl\osx64 -NO%BDS%\lib\osx64\release -M -y System.pas Debug:%BDS%\bin\dccosx64.exe -$C- -$D2 -CG -H -M -Q -V- -W^ -Z --no-config -JPHN-W-UNSUPPORTED_CONSTRUCT -W-UNIT_DEPRECATED -W-SYMBOL_DEPRECATED-W-UNIT_PLATFORM -W-SYMBOL_PLATFORM -W-WIDECHAR_REDUCED-R%BDS%\lib\osx64\debug -U%BDS%\lib\osx64\debug -O%BDS%\lib\osx64\debug -NU%BDS%\lib\osx64\debug -NH%BDS%\include\osx\rtl\osx64 -NO%BDS%\lib\osx64\debug -M -y System.pas
%BDS%\bin\dccosx64.exe -$C- -$D2 -CG -H -M -Q -V- -W^ -Z --no-config -JPHN-W-UNSUPPORTED_CONSTRUCT -W-UNIT_DEPRECATED -W-SYMBOL_DEPRECATED-W-UNIT_PLATFORM -W-SYMBOL_PLATFORM -W-WIDECHAR_REDUCED-R%BDS%\lib\osx64\debug -U%BDS%\lib\osx64\debug -O%BDS%\lib\osx64\debug -NU%BDS%\lib\osx64\debug -NH%BDS%\include\osx\rtl\osx64 -NO%BDS%\lib\osx64\debug -M -y System.pas
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